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9e3c856a | 1 | mailto(rsync-bugs@samba.org) |
618c8a73 | 2 | manpage(rsync)(1)(30 Sep 2004)()() |
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3 | manpagename(rsync)(faster, flexible replacement for rcp) |
4 | manpagesynopsis() | |
5 | ||
9ef53907 | 6 | rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST |
41059f75 | 7 | |
9ef53907 | 8 | rsync [OPTION]... [USER@]HOST:SRC DEST |
41059f75 | 9 | |
9ef53907 | 10 | rsync [OPTION]... SRC [SRC]... DEST |
41059f75 | 11 | |
9ef53907 | 12 | rsync [OPTION]... [USER@]HOST::SRC [DEST] |
41059f75 | 13 | |
9ef53907 | 14 | rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST |
41059f75 | 15 | |
9ef53907 | 16 | rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST] |
039faa86 | 17 | |
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18 | rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST |
19 | ||
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20 | manpagedescription() |
21 | ||
22 | rsync is a program that behaves in much the same way that rcp does, | |
23 | but has many more options and uses the rsync remote-update protocol to | |
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24 | greatly speed up file transfers when the destination file is being |
25 | updated. | |
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26 | |
27 | The rsync remote-update protocol allows rsync to transfer just the | |
f39281ae | 28 | differences between two sets of files across the network connection, using |
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29 | an efficient checksum-search algorithm described in the technical |
30 | report that accompanies this package. | |
31 | ||
32 | Some of the additional features of rsync are: | |
33 | ||
34 | itemize( | |
b9f592fb | 35 | it() support for copying links, devices, owners, groups, and permissions |
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36 | it() exclude and exclude-from options similar to GNU tar |
37 | it() a CVS exclude mode for ignoring the same files that CVS would ignore | |
43cd760f | 38 | it() can use any transparent remote shell, including ssh or rsh |
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39 | it() does not require root privileges |
40 | it() pipelining of file transfers to minimize latency costs | |
41 | it() support for anonymous or authenticated rsync servers (ideal for | |
42 | mirroring) | |
43 | ) | |
44 | ||
45 | manpagesection(GENERAL) | |
46 | ||
bef49340 | 47 | There are eight different ways of using rsync. They are: |
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48 | |
49 | itemize( | |
50 | it() for copying local files. This is invoked when neither | |
51 | source nor destination path contains a : separator | |
52 | ||
53 | it() for copying from the local machine to a remote machine using | |
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54 | a remote shell program as the transport (such as ssh or |
55 | rsh). This is invoked when the destination path contains a | |
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56 | single : separator. |
57 | ||
58 | it() for copying from a remote machine to the local machine | |
6c7c2ef3 | 59 | using a remote shell program. This is invoked when the source |
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60 | contains a : separator. |
61 | ||
62 | it() for copying from a remote rsync server to the local | |
63 | machine. This is invoked when the source path contains a :: | |
bb18e755 | 64 | separator or an rsync:// URL. |
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65 | |
66 | it() for copying from the local machine to a remote rsync | |
67 | server. This is invoked when the destination path contains a :: | |
bb18e755 | 68 | separator or an rsync:// URL. |
039faa86 | 69 | |
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70 | it() for copying from a remote machine using a remote shell |
71 | program as the transport, using rsync server on the remote | |
72 | machine. This is invoked when the source path contains a :: | |
73 | separator and the --rsh=COMMAND (aka "-e COMMAND") option is | |
74 | also provided. | |
75 | ||
76 | it() for copying from the local machine to a remote machine | |
77 | using a remote shell program as the transport, using rsync | |
78 | server on the remote machine. This is invoked when the | |
79 | destination path contains a :: separator and the | |
4d888108 | 80 | --rsh=COMMAND option is also provided. |
bef49340 | 81 | |
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82 | it() for listing files on a remote machine. This is done the |
83 | same way as rsync transfers except that you leave off the | |
84 | local destination. | |
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85 | ) |
86 | ||
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87 | Note that in all cases (other than listing) at least one of the source |
88 | and destination paths must be local. | |
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89 | |
90 | manpagesection(SETUP) | |
91 | ||
92 | See the file README for installation instructions. | |
93 | ||
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94 | Once installed, you can use rsync to any machine that you can access via |
95 | a remote shell (as well as some that you can access using the rsync | |
43cd760f | 96 | daemon-mode protocol). For remote transfers, a modern rsync uses ssh |
1bbf83c0 | 97 | for its communications, but it may have been configured to use a |
43cd760f | 98 | different remote shell by default, such as rsh or remsh. |
41059f75 | 99 | |
1bbf83c0 | 100 | You can also specify any remote shell you like, either by using the -e |
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101 | command line option, or by setting the RSYNC_RSH environment variable. |
102 | ||
103 | One common substitute is to use ssh, which offers a high degree of | |
104 | security. | |
105 | ||
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106 | Note that rsync must be installed on both the source and destination |
107 | machines. | |
108 | ||
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109 | manpagesection(USAGE) |
110 | ||
111 | You use rsync in the same way you use rcp. You must specify a source | |
112 | and a destination, one of which may be remote. | |
113 | ||
4d888108 | 114 | Perhaps the best way to explain the syntax is with some examples: |
41059f75 | 115 | |
675ef1aa | 116 | quote(rsync -t *.c foo:src/) |
41059f75 | 117 | |
8a97fc2e | 118 | This would transfer all files matching the pattern *.c from the |
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119 | current directory to the directory src on the machine foo. If any of |
120 | the files already exist on the remote system then the rsync | |
121 | remote-update protocol is used to update the file by sending only the | |
122 | differences. See the tech report for details. | |
123 | ||
124 | quote(rsync -avz foo:src/bar /data/tmp) | |
125 | ||
8a97fc2e | 126 | This would recursively transfer all files from the directory src/bar on the |
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127 | machine foo into the /data/tmp/bar directory on the local machine. The |
128 | files are transferred in "archive" mode, which ensures that symbolic | |
b5accaba | 129 | links, devices, attributes, permissions, ownerships, etc. are preserved |
14d43f1f | 130 | in the transfer. Additionally, compression will be used to reduce the |
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131 | size of data portions of the transfer. |
132 | ||
133 | quote(rsync -avz foo:src/bar/ /data/tmp) | |
134 | ||
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135 | A trailing slash on the source changes this behavior to avoid creating an |
136 | additional directory level at the destination. You can think of a trailing | |
137 | / on a source as meaning "copy the contents of this directory" as opposed | |
138 | to "copy the directory by name", but in both cases the attributes of the | |
139 | containing directory are transferred to the containing directory on the | |
140 | destination. In other words, each of the following commands copies the | |
141 | files in the same way, including their setting of the attributes of | |
142 | /dest/foo: | |
143 | ||
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144 | quote(rsync -av /src/foo /dest) |
145 | quote(rsync -av /src/foo/ /dest/foo) | |
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146 | |
147 | You can also use rsync in local-only mode, where both the source and | |
148 | destination don't have a ':' in the name. In this case it behaves like | |
149 | an improved copy command. | |
150 | ||
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151 | quote(rsync somehost.mydomain.com::) |
152 | ||
8a97fc2e | 153 | This would list all the anonymous rsync modules available on the host |
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154 | somehost.mydomain.com. (See the following section for more details.) |
155 | ||
41059f75 | 156 | |
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157 | manpagesection(ADVANCED USAGE) |
158 | ||
159 | The syntax for requesting multiple files from a remote host involves using | |
160 | quoted spaces in the SRC. Some examples: | |
161 | ||
162 | quote(rsync host::'modname/dir1/file1 modname/dir2/file2' /dest) | |
163 | ||
164 | This would copy file1 and file2 into /dest from an rsync daemon. Each | |
165 | additional arg must include the same "modname/" prefix as the first one, | |
166 | and must be preceded by a single space. All other spaces are assumed | |
167 | to be a part of the filenames. | |
168 | ||
169 | quote(rsync -av host:'dir1/file1 dir2/file2' /dest) | |
170 | ||
171 | This would copy file1 and file2 into /dest using a remote shell. This | |
172 | word-splitting is done by the remote shell, so if it doesn't work it means | |
173 | that the remote shell isn't configured to split its args based on | |
174 | whitespace (a very rare setting, but not unknown). If you need to transfer | |
175 | a filename that contains whitespace, you'll need to either escape the | |
176 | whitespace in a way that the remote shell will understand, or use wildcards | |
177 | in place of the spaces. Two examples of this are: | |
178 | ||
179 | quote(rsync -av host:'file\ name\ with\ spaces' /dest) | |
180 | quote(rsync -av host:file?name?with?spaces /dest) | |
181 | ||
182 | This latter example assumes that your shell passes through unmatched | |
183 | wildcards. If it complains about "no match", put the name in quotes. | |
184 | ||
185 | ||
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186 | manpagesection(CONNECTING TO AN RSYNC SERVER) |
187 | ||
1bbf83c0 | 188 | It is also possible to use rsync without a remote shell as the |
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189 | transport. In this case you will connect to a remote rsync server |
190 | running on TCP port 873. | |
191 | ||
eb06fa95 | 192 | You may establish the connection via a web proxy by setting the |
4c3b4b25 | 193 | environment variable RSYNC_PROXY to a hostname:port pair pointing to |
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194 | your web proxy. Note that your web proxy's configuration must support |
195 | proxy connections to port 873. | |
4c3b4b25 | 196 | |
1bbf83c0 | 197 | Using rsync in this way is the same as using it with a remote shell except |
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198 | that: |
199 | ||
200 | itemize( | |
201 | it() you use a double colon :: instead of a single colon to | |
bb18e755 | 202 | separate the hostname from the path or an rsync:// URL. |
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203 | |
204 | it() the remote server may print a message of the day when you | |
14d43f1f | 205 | connect. |
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206 | |
207 | it() if you specify no path name on the remote server then the | |
208 | list of accessible paths on the server will be shown. | |
14d43f1f | 209 | |
f7632fc6 | 210 | it() if you specify no local destination then a listing of the |
14d43f1f | 211 | specified files on the remote server is provided. |
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212 | ) |
213 | ||
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214 | Some paths on the remote server may require authentication. If so then |
215 | you will receive a password prompt when you connect. You can avoid the | |
216 | password prompt by setting the environment variable RSYNC_PASSWORD to | |
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217 | the password you want to use or using the --password-file option. This |
218 | may be useful when scripting rsync. | |
4c3d16be | 219 | |
3bc67f0c | 220 | WARNING: On some systems environment variables are visible to all |
65575e96 | 221 | users. On those systems using --password-file is recommended. |
3bc67f0c | 222 | |
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223 | manpagesection(CONNECTING TO AN RSYNC SERVER OVER A REMOTE SHELL PROGRAM) |
224 | ||
225 | It is sometimes useful to be able to set up file transfers using rsync | |
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226 | server capabilities on the remote machine, while still using ssh or |
227 | rsh for transport. This is especially useful when you want to connect | |
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228 | to a remote machine via ssh (for encryption or to get through a |
229 | firewall), but you still want to have access to the rsync server | |
230 | features (see RUNNING AN RSYNC SERVER OVER A REMOTE SHELL PROGRAM, | |
231 | below). | |
232 | ||
233 | From the user's perspective, using rsync in this way is the same as | |
234 | using it to connect to an rsync server, except that you must | |
235 | explicitly set the remote shell program on the command line with | |
236 | --rsh=COMMAND. (Setting RSYNC_RSH in the environment will not turn on | |
237 | this functionality.) | |
238 | ||
239 | In order to distinguish between the remote-shell user and the rsync | |
240 | server user, you can use '-l user' on your remote-shell command: | |
241 | ||
242 | quote(rsync -av --rsh="ssh -l ssh-user" rsync-user@host::module[/path] local-path) | |
243 | ||
244 | The "ssh-user" will be used at the ssh level; the "rsync-user" will be | |
245 | used to check against the rsyncd.conf on the remote host. | |
246 | ||
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247 | manpagesection(RUNNING AN RSYNC SERVER) |
248 | ||
4d888108 | 249 | An rsync server is configured using a configuration file. Please see the |
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250 | rsyncd.conf(5) man page for more information. By default the configuration |
251 | file is called /etc/rsyncd.conf, unless rsync is running over a remote | |
252 | shell program and is not running as root; in that case, the default name | |
253 | is rsyncd.conf in the current directory on the remote computer | |
254 | (typically $HOME). | |
41059f75 | 255 | |
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256 | manpagesection(RUNNING AN RSYNC SERVER OVER A REMOTE SHELL PROGRAM) |
257 | ||
258 | See the rsyncd.conf(5) man page for full information on the rsync | |
259 | server configuration file. | |
260 | ||
261 | Several configuration options will not be available unless the remote | |
262 | user is root (e.g. chroot, setuid/setgid, etc.). There is no need to | |
263 | configure inetd or the services map to include the rsync server port | |
264 | if you run an rsync server only via a remote shell program. | |
265 | ||
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266 | To run an rsync server out of a single-use ssh key, see this section |
267 | in the rsyncd.conf(5) man page. | |
bef49340 | 268 | |
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269 | manpagesection(EXAMPLES) |
270 | ||
271 | Here are some examples of how I use rsync. | |
272 | ||
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273 | To backup my wife's home directory, which consists of large MS Word |
274 | files and mail folders, I use a cron job that runs | |
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275 | |
276 | quote(rsync -Cavz . arvidsjaur:backup) | |
277 | ||
f39281ae | 278 | each night over a PPP connection to a duplicate directory on my machine |
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279 | "arvidsjaur". |
280 | ||
281 | To synchronize my samba source trees I use the following Makefile | |
282 | targets: | |
283 | ||
284 | quote( get:nl() | |
285 | rsync -avuzb --exclude '*~' samba:samba/ . | |
286 | ||
287 | put:nl() | |
288 | rsync -Cavuzb . samba:samba/ | |
289 | ||
290 | sync: get put) | |
291 | ||
292 | this allows me to sync with a CVS directory at the other end of the | |
f39281ae | 293 | connection. I then do cvs operations on the remote machine, which saves a |
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294 | lot of time as the remote cvs protocol isn't very efficient. |
295 | ||
296 | I mirror a directory between my "old" and "new" ftp sites with the | |
297 | command | |
298 | ||
299 | quote(rsync -az -e ssh --delete ~ftp/pub/samba/ nimbus:"~ftp/pub/tridge/samba") | |
300 | ||
301 | this is launched from cron every few hours. | |
302 | ||
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303 | manpagesection(OPTIONS SUMMARY) |
304 | ||
14d43f1f | 305 | Here is a short summary of the options available in rsync. Please refer |
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306 | to the detailed description below for a complete description. |
307 | ||
308 | verb( | |
309 | -v, --verbose increase verbosity | |
b86f0cef | 310 | -q, --quiet decrease verbosity |
c95da96a | 311 | -c, --checksum always checksum |
06891710 | 312 | -a, --archive archive mode, equivalent to -rlptgoD |
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313 | -r, --recursive recurse into directories |
314 | -R, --relative use relative path names | |
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315 | --no-relative turn off --relative |
316 | --no-implied-dirs don't send implied dirs with -R | |
915dd207 | 317 | -b, --backup make backups (see --suffix & --backup-dir) |
5b56cc19 | 318 | --backup-dir make backups into this directory |
915dd207 | 319 | --suffix=SUFFIX backup suffix (default ~ w/o --backup-dir) |
c95da96a | 320 | -u, --update update only (don't overwrite newer files) |
eb162f3b | 321 | --inplace update the destination files in-place |
716e73d4 | 322 | -K, --keep-dirlinks treat symlinked dir on receiver as dir |
eb06fa95 | 323 | -l, --links copy symlinks as symlinks |
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324 | -L, --copy-links copy the referent of all symlinks |
325 | --copy-unsafe-links copy the referent of "unsafe" symlinks | |
326 | --safe-links ignore "unsafe" symlinks | |
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327 | -H, --hard-links preserve hard links |
328 | -p, --perms preserve permissions | |
329 | -o, --owner preserve owner (root only) | |
330 | -g, --group preserve group | |
331 | -D, --devices preserve devices (root only) | |
332 | -t, --times preserve times | |
333 | -S, --sparse handle sparse files efficiently | |
334 | -n, --dry-run show what would have been transferred | |
335 | -W, --whole-file copy whole files, no incremental checks | |
93689aa5 | 336 | --no-whole-file turn off --whole-file |
c95da96a | 337 | -x, --one-file-system don't cross filesystem boundaries |
3ed8eb3f | 338 | -B, --block-size=SIZE force a fixed checksum block-size |
915dd207 | 339 | -e, --rsh=COMMAND specify the remote shell |
d9fcc198 | 340 | --rsync-path=PATH specify path to rsync on the remote machine |
1347d512 | 341 | --existing only update files that already exist |
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342 | --ignore-existing ignore files that already exist on receiver |
343 | --delete delete files that don't exist on sender | |
344 | --delete-excluded also delete excluded files on receiver | |
d48c8065 | 345 | --delete-after receiver deletes after transfer, not before |
b5accaba | 346 | --ignore-errors delete even if there are I/O errors |
0b73ca12 | 347 | --max-delete=NUM don't delete more than NUM files |
3610c458 | 348 | --max-size=SIZE don't transfer any file larger than SIZE |
c95da96a | 349 | --partial keep partially transferred files |
44cad59f | 350 | --partial-dir=DIR put a partially transferred file into DIR |
915dd207 | 351 | --force force deletion of dirs even if not empty |
c95da96a | 352 | --numeric-ids don't map uid/gid values by user/group name |
b5accaba | 353 | --timeout=TIME set I/O timeout in seconds |
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354 | -I, --ignore-times turn off mod time & file size quick check |
355 | --size-only ignore mod time for quick check (use size) | |
f6aeaa74 | 356 | --modify-window=NUM compare mod times with reduced accuracy |
c95da96a | 357 | -T --temp-dir=DIR create temporary files in directory DIR |
915dd207 | 358 | --compare-dest=DIR also compare received files relative to DIR |
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359 | --copy-dest=DIR ... and include copies of unchanged files |
360 | --link-dest=DIR hardlink to files in DIR when unchanged | |
d9fcc198 | 361 | -P equivalent to --partial --progress |
c95da96a | 362 | -z, --compress compress file data |
f177b7cc | 363 | -C, --cvs-exclude auto ignore files in the same way CVS does |
2acf81eb | 364 | --exclude=PATTERN exclude files matching PATTERN |
9ef53907 | 365 | --exclude-from=FILE exclude patterns listed in FILE |
2acf81eb | 366 | --include=PATTERN don't exclude files matching PATTERN |
9ef53907 | 367 | --include-from=FILE don't exclude patterns listed in FILE |
f177b7cc | 368 | --files-from=FILE read FILE for list of source-file names |
915dd207 | 369 | -0 --from0 all file lists are delimited by nulls |
c95da96a | 370 | --version print version number |
c259892c | 371 | --port=PORT specify double-colon alternate port number |
b5accaba | 372 | --blocking-io use blocking I/O for the remote shell |
93689aa5 | 373 | --no-blocking-io turn off --blocking-io |
c95da96a | 374 | --stats give some file transfer stats |
eb86d661 | 375 | --progress show progress during transfer |
b6062654 | 376 | --log-format=FORMAT log file transfers using specified format |
9ef53907 | 377 | --password-file=FILE get password from FILE |
ef5d23eb | 378 | --bwlimit=KBPS limit I/O bandwidth, KBytes per second |
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379 | --write-batch=FILE write a batch to FILE |
380 | --read-batch=FILE read a batch from FILE | |
c8d895de | 381 | --checksum-seed=NUM set block/file checksum seed |
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382 | -4 --ipv4 prefer IPv4 |
383 | -6 --ipv6 prefer IPv6 | |
c95da96a | 384 | -h, --help show this help screen |
bdf278f7 | 385 | ) |
6902ed17 | 386 | |
bdf278f7 | 387 | Rsync can also be run as a daemon, in which case the following options are accepted: |
6902ed17 | 388 | |
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389 | verb( |
390 | --daemon run as an rsync daemon | |
391 | --address=ADDRESS bind to the specified address | |
1f69bec4 | 392 | --bwlimit=KBPS limit I/O bandwidth, KBytes per second |
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393 | --config=FILE specify alternate rsyncd.conf file |
394 | --no-detach do not detach from the parent | |
c259892c | 395 | --port=PORT listen on alternate port number |
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396 | -4 --ipv4 prefer IPv4 |
397 | -6 --ipv6 prefer IPv6 | |
398 | -h, --help show this help screen | |
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399 | ) |
400 | ||
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401 | manpageoptions() |
402 | ||
403 | rsync uses the GNU long options package. Many of the command line | |
404 | options have two variants, one short and one long. These are shown | |
14d43f1f | 405 | below, separated by commas. Some options only have a long variant. |
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406 | The '=' for options that take a parameter is optional; whitespace |
407 | can be used instead. | |
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408 | |
409 | startdit() | |
410 | dit(bf(-h, --help)) Print a short help page describing the options | |
bdf278f7 | 411 | available in rsync. |
41059f75 | 412 | |
bdf278f7 | 413 | dit(bf(--version)) print the rsync version number and exit. |
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414 | |
415 | dit(bf(-v, --verbose)) This option increases the amount of information you | |
14d43f1f | 416 | are given during the transfer. By default, rsync works silently. A |
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417 | single -v will give you information about what files are being |
418 | transferred and a brief summary at the end. Two -v flags will give you | |
419 | information on what files are being skipped and slightly more | |
420 | information at the end. More than two -v flags should only be used if | |
14d43f1f | 421 | you are debugging rsync. |
41059f75 | 422 | |
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423 | dit(bf(-q, --quiet)) This option decreases the amount of information you |
424 | are given during the transfer, notably suppressing information messages | |
425 | from the remote server. This flag is useful when invoking rsync from | |
426 | cron. | |
427 | ||
41059f75 | 428 | dit(bf(-I, --ignore-times)) Normally rsync will skip any files that are |
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429 | already the same size and have the same modification time-stamp. |
430 | This option turns off this "quick check" behavior. | |
41059f75 | 431 | |
a03a9f4e | 432 | dit(bf(--size-only)) Normally rsync will not transfer any files that are |
915dd207 | 433 | already the same size and have the same modification time-stamp. With the |
a03a9f4e | 434 | --size-only option, files will not be transferred if they have the same size, |
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435 | regardless of timestamp. This is useful when starting to use rsync |
436 | after using another mirroring system which may not preserve timestamps | |
437 | exactly. | |
438 | ||
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439 | dit(bf(--modify-window)) When comparing two timestamps rsync treats |
440 | the timestamps as being equal if they are within the value of | |
441 | modify_window. This is normally zero, but you may find it useful to | |
442 | set this to a larger value in some situations. In particular, when | |
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443 | transferring to Windows FAT filesystems which cannot represent times |
444 | with a 1 second resolution --modify-window=1 is useful. | |
5b56cc19 | 445 | |
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446 | dit(bf(-c, --checksum)) This forces the sender to checksum all files using |
447 | a 128-bit MD4 checksum before transfer. The checksum is then | |
448 | explicitly checked on the receiver and any files of the same name | |
449 | which already exist and have the same checksum and size on the | |
a03a9f4e | 450 | receiver are not transferred. This option can be quite slow. |
41059f75 | 451 | |
e7bf3e5e MP |
452 | dit(bf(-a, --archive)) This is equivalent to -rlptgoD. It is a quick |
453 | way of saying you want recursion and want to preserve almost | |
454 | everything. | |
455 | ||
456 | Note however that bf(-a) bf(does not preserve hardlinks), because | |
457 | finding multiply-linked files is expensive. You must separately | |
458 | specify bf(-H). | |
41059f75 | 459 | |
24986abd AT |
460 | dit(bf(-r, --recursive)) This tells rsync to copy directories |
461 | recursively. If you don't specify this then rsync won't copy | |
462 | directories at all. | |
41059f75 AT |
463 | |
464 | dit(bf(-R, --relative)) Use relative paths. This means that the full path | |
465 | names specified on the command line are sent to the server rather than | |
466 | just the last parts of the filenames. This is particularly useful when | |
14d43f1f DD |
467 | you want to send several different directories at the same time. For |
468 | example, if you used the command | |
41059f75 | 469 | |
9bef934c | 470 | verb(rsync /foo/bar/foo.c remote:/tmp/) |
41059f75 AT |
471 | |
472 | then this would create a file called foo.c in /tmp/ on the remote | |
473 | machine. If instead you used | |
474 | ||
9bef934c | 475 | verb(rsync -R /foo/bar/foo.c remote:/tmp/) |
41059f75 AT |
476 | |
477 | then a file called /tmp/foo/bar/foo.c would be created on the remote | |
9bef934c WD |
478 | machine -- the full path name is preserved. To limit the amount of |
479 | path information that is sent, do something like this: | |
480 | ||
481 | verb(cd /foo | |
482 | rsync -R bar/foo.c remote:/tmp/) | |
483 | ||
484 | That would create /tmp/bar/foo.c on the remote machine. | |
f177b7cc WD |
485 | |
486 | dit(bf(--no-relative)) Turn off the --relative option. This is only | |
487 | needed if you want to use --files-from without its implied --relative | |
488 | file processing. | |
489 | ||
490 | dit(bf(--no-implied-dirs)) When combined with the --relative option, the | |
491 | implied directories in each path are not explicitly duplicated as part | |
492 | of the transfer. This makes the transfer more optimal and also allows | |
493 | the two sides to have non-matching symlinks in the implied part of the | |
494 | path. For instance, if you transfer the file "/path/foo/file" with -R, | |
495 | the default is for rsync to ensure that "/path" and "/path/foo" on the | |
496 | destination exactly match the directories/symlinks of the source. Using | |
497 | the --no-implied-dirs option would omit both of these implied dirs, | |
498 | which means that if "/path" was a real directory on one machine and a | |
499 | symlink of the other machine, rsync would not try to change this. | |
41059f75 | 500 | |
b19fd07c WD |
501 | dit(bf(-b, --backup)) With this option, preexisting destination files are |
502 | renamed as each file is transferred or deleted. You can control where the | |
503 | backup file goes and what (if any) suffix gets appended using the | |
504 | --backup-dir and --suffix options. | |
41059f75 | 505 | |
66203a98 AT |
506 | dit(bf(--backup-dir=DIR)) In combination with the --backup option, this |
507 | tells rsync to store all backups in the specified directory. This is | |
759ac870 DD |
508 | very useful for incremental backups. You can additionally |
509 | specify a backup suffix using the --suffix option | |
510 | (otherwise the files backed up in the specified directory | |
511 | will keep their original filenames). | |
0b79c324 WD |
512 | If DIR is a relative path, it is relative to the destination directory |
513 | (which changes in a recursive transfer). | |
66203a98 | 514 | |
b5679335 | 515 | dit(bf(--suffix=SUFFIX)) This option allows you to override the default |
b19fd07c WD |
516 | backup suffix used with the --backup (-b) option. The default suffix is a ~ |
517 | if no --backup-dir was specified, otherwise it is an empty string. | |
9ef53907 | 518 | |
4539c0d7 WD |
519 | dit(bf(-u, --update)) This forces rsync to skip any files which exist on |
520 | the destination and have a modified time that is newer than the source | |
521 | file. (If an existing destination file has a modify time equal to the | |
522 | source file's, it will be updated if the sizes are different.) | |
41059f75 | 523 | |
4539c0d7 WD |
524 | In the current implementation of --update, a difference of file format |
525 | between the sender and receiver is always | |
adddd075 WD |
526 | considered to be important enough for an update, no matter what date |
527 | is on the objects. In other words, if the source has a directory or a | |
528 | symlink where the destination has a file, the transfer would occur | |
529 | regardless of the timestamps. This might change in the future (feel | |
530 | free to comment on this on the mailing list if you have an opinion). | |
531 | ||
716e73d4 WD |
532 | dit(bf(-K, --keep-dirlinks)) On the receiving side, if a symlink is |
533 | pointing to a directory, it will be treated as matching a directory | |
534 | from the sender. | |
535 | ||
a3221d2a WD |
536 | dit(bf(--inplace)) This causes rsync not to create a new copy of the file |
537 | and then move it into place. Instead rsync will overwrite the existing | |
eb162f3b WD |
538 | file, meaning that the rsync algorithm can't accomplish the full amount of |
539 | network reduction it might be able to otherwise (since it does not yet try | |
540 | to sort data matches). One exception to this is if you combine the option | |
541 | with --backup, since rsync is smart enough to use the backup file as the | |
542 | basis file for the transfer. | |
a3221d2a | 543 | |
183150b7 WD |
544 | This option is useful for transfer of large files with block-based changes |
545 | or appended data, and also on systems that are disk bound, not network | |
546 | bound. | |
547 | ||
548 | The option implies --partial (since an interrupted transfer does not delete | |
eb162f3b WD |
549 | the file), but conflicts with --partial-dir. Prior to rsync 2.6.4 |
550 | --inplace was also incompatible with --compare-dest, --copy-dest, and | |
551 | --link-dest. | |
a3221d2a | 552 | |
399371e7 | 553 | WARNING: The file's data will be in an inconsistent state during the |
98f51bfb | 554 | transfer (and possibly afterward if the transfer gets interrupted), so you |
399371e7 | 555 | should not use this option to update files that are in use. Also note that |
eb162f3b | 556 | rsync will be unable to update a file in-place that is not writable by the |
75b243a5 | 557 | receiving user. |
a3221d2a | 558 | |
eb06fa95 MP |
559 | dit(bf(-l, --links)) When symlinks are encountered, recreate the |
560 | symlink on the destination. | |
41059f75 | 561 | |
eb06fa95 | 562 | dit(bf(-L, --copy-links)) When symlinks are encountered, the file that |
ef855d19 WD |
563 | they point to (the referent) is copied, rather than the symlink. In older |
564 | versions of rsync, this option also had the side-effect of telling the | |
565 | receiving side to follow symlinks, such as symlinks to directories. In a | |
566 | modern rsync such as this one, you'll need to specify --keep-dirlinks (-K) | |
567 | to get this extra behavior. The only exception is when sending files to | |
568 | an rsync that is too old to understand -K -- in that case, the -L option | |
569 | will still have the side-effect of -K on that older receiving rsync. | |
b5313607 | 570 | |
eb06fa95 | 571 | dit(bf(--copy-unsafe-links)) This tells rsync to copy the referent of |
7af4227a | 572 | symbolic links that point outside the copied tree. Absolute symlinks |
eb06fa95 MP |
573 | are also treated like ordinary files, and so are any symlinks in the |
574 | source path itself when --relative is used. | |
41059f75 | 575 | |
d310a212 | 576 | dit(bf(--safe-links)) This tells rsync to ignore any symbolic links |
7af4227a | 577 | which point outside the copied tree. All absolute symlinks are |
d310a212 | 578 | also ignored. Using this option in conjunction with --relative may |
14d43f1f | 579 | give unexpected results. |
d310a212 | 580 | |
41059f75 AT |
581 | dit(bf(-H, --hard-links)) This tells rsync to recreate hard links on |
582 | the remote system to be the same as the local system. Without this | |
583 | option hard links are treated like regular files. | |
584 | ||
585 | Note that rsync can only detect hard links if both parts of the link | |
586 | are in the list of files being sent. | |
587 | ||
588 | This option can be quite slow, so only use it if you need it. | |
589 | ||
590 | dit(bf(-W, --whole-file)) With this option the incremental rsync algorithm | |
a1a440c2 DD |
591 | is not used and the whole file is sent as-is instead. The transfer may be |
592 | faster if this option is used when the bandwidth between the source and | |
6eb770bb | 593 | destination machines is higher than the bandwidth to disk (especially when the |
4d888108 | 594 | "disk" is actually a networked filesystem). This is the default when both |
6eb770bb | 595 | the source and destination are specified as local paths. |
41059f75 | 596 | |
93689aa5 DD |
597 | dit(bf(--no-whole-file)) Turn off --whole-file, for use when it is the |
598 | default. | |
599 | ||
8dc74608 WD |
600 | dit(bf(-p, --perms)) This option causes rsync to set the destination |
601 | permissions to be the same as the source permissions. | |
602 | ||
603 | Without this option, each new file gets its permissions set based on the | |
604 | source file's permissions and the umask at the receiving end, while all | |
605 | other files (including updated files) retain their existing permissions | |
606 | (which is the same behavior as other file-copy utilities, such as cp). | |
41059f75 | 607 | |
eb06fa95 MP |
608 | dit(bf(-o, --owner)) This option causes rsync to set the owner of the |
609 | destination file to be the same as the source file. On most systems, | |
a2b0471f WD |
610 | only the super-user can set file ownership. By default, the preservation |
611 | is done by name, but may fall back to using the ID number in some | |
612 | circumstances. See the --numeric-ids option for a full discussion. | |
41059f75 | 613 | |
eb06fa95 MP |
614 | dit(bf(-g, --group)) This option causes rsync to set the group of the |
615 | destination file to be the same as the source file. If the receiving | |
616 | program is not running as the super-user, only groups that the | |
a2b0471f WD |
617 | receiver is a member of will be preserved. By default, the preservation |
618 | is done by name, but may fall back to using the ID number in some | |
619 | circumstances. See the --numeric-ids option for a full discussion. | |
41059f75 AT |
620 | |
621 | dit(bf(-D, --devices)) This option causes rsync to transfer character and | |
622 | block device information to the remote system to recreate these | |
623 | devices. This option is only available to the super-user. | |
624 | ||
625 | dit(bf(-t, --times)) This tells rsync to transfer modification times along | |
baf3e504 DD |
626 | with the files and update them on the remote system. Note that if this |
627 | option is not used, the optimization that excludes files that have not been | |
628 | modified cannot be effective; in other words, a missing -t or -a will | |
d0bc3520 WD |
629 | cause the next transfer to behave as if it used -I, causing all files to be |
630 | updated (though the rsync algorithm will make the update fairly efficient | |
631 | if the files haven't actually changed, you're much better off using -t). | |
41059f75 AT |
632 | |
633 | dit(bf(-n, --dry-run)) This tells rsync to not do any file transfers, | |
634 | instead it will just report the actions it would have taken. | |
635 | ||
636 | dit(bf(-S, --sparse)) Try to handle sparse files efficiently so they take | |
637 | up less space on the destination. | |
638 | ||
d310a212 AT |
639 | NOTE: Don't use this option when the destination is a Solaris "tmpfs" |
640 | filesystem. It doesn't seem to handle seeks over null regions | |
641 | correctly and ends up corrupting the files. | |
642 | ||
41059f75 AT |
643 | dit(bf(-x, --one-file-system)) This tells rsync not to cross filesystem |
644 | boundaries when recursing. This is useful for transferring the | |
645 | contents of only one filesystem. | |
646 | ||
1347d512 AT |
647 | dit(bf(--existing)) This tells rsync not to create any new files - |
648 | only update files that already exist on the destination. | |
649 | ||
3d6feada MP |
650 | dit(bf(--ignore-existing)) |
651 | This tells rsync not to update files that already exist on | |
652 | the destination. | |
653 | ||
0b73ca12 AT |
654 | dit(bf(--max-delete=NUM)) This tells rsync not to delete more than NUM |
655 | files or directories. This is useful when mirroring very large trees | |
656 | to prevent disasters. | |
657 | ||
3610c458 WD |
658 | dit(bf(--max-size=SIZE)) This tells rsync to avoid transferring any |
659 | file that is larger than the specified SIZE. The SIZE value can be | |
660 | suffixed with a letter to indicate a size multiplier (K, M, or G) and | |
661 | may be a fractional value (e.g. "--max-size=1.5m"). | |
662 | ||
e8b155a3 WD |
663 | dit(bf(--delete)) This tells rsync to delete extraneous files from the |
664 | receiving side (ones that aren't on the sending side), but only for the | |
665 | directories that are being synchronized. You must have asked rsync to | |
666 | send the whole directory (e.g. "dir" or "dir/") without using a wildcard | |
667 | for the directory's contents (e.g. "dir/*") since the wildcard is expanded | |
668 | by the shell and rsync thus gets a request to transfer those files, not | |
669 | the files' parent directory. Files that are excluded from transfer are | |
670 | excluded from being deleted unless you use --delete-excluded. | |
41059f75 | 671 | |
24986abd AT |
672 | This option has no effect if directory recursion is not selected. |
673 | ||
b33b791e | 674 | This option can be dangerous if used incorrectly! It is a very good idea |
e8b155a3 | 675 | to run first using the --dry-run option (-n) to see what files would be |
b33b791e | 676 | deleted to make sure important files aren't listed. |
41059f75 | 677 | |
e8b155a3 | 678 | If the sending side detects any I/O errors, then the deletion of any |
3e578a19 AT |
679 | files at the destination will be automatically disabled. This is to |
680 | prevent temporary filesystem failures (such as NFS errors) on the | |
681 | sending side causing a massive deletion of files on the | |
2c5548d2 | 682 | destination. You can override this with the --ignore-errors option. |
41059f75 | 683 | |
b33b791e DD |
684 | dit(bf(--delete-excluded)) In addition to deleting the files on the |
685 | receiving side that are not on the sending side, this tells rsync to also | |
686 | delete any files on the receiving side that are excluded (see --exclude). | |
786c3687 | 687 | Implies --delete. |
b33b791e | 688 | |
d48c8065 WD |
689 | dit(bf(--delete-after)) By default rsync does file deletions on the |
690 | receiving side before transferring files to try to ensure that there is | |
691 | sufficient space on the receiving filesystem. If you want to delete | |
692 | after transferring, use the --delete-after switch. Implies --delete. | |
57df171b | 693 | |
e8b155a3 WD |
694 | One reason to use --delete-after is to avoid a delay before the start of |
695 | the transfer (while the receiving side is scanned for deletions) as this | |
696 | delay might cause the transfer to timeout. | |
697 | ||
2c5548d2 | 698 | dit(bf(--ignore-errors)) Tells --delete to go ahead and delete files |
b5accaba | 699 | even when there are I/O errors. |
2c5548d2 | 700 | |
b695d088 DD |
701 | dit(bf(--force)) This options tells rsync to delete directories even if |
702 | they are not empty when they are to be replaced by non-directories. This | |
703 | is only relevant without --delete because deletions are now done depth-first. | |
704 | Requires the --recursive option (which is implied by -a) to have any effect. | |
41059f75 | 705 | |
3ed8eb3f WD |
706 | dit(bf(-B, --block-size=BLOCKSIZE)) This forces the block size used in |
707 | the rsync algorithm to a fixed value. It is normally selected based on | |
708 | the size of each file being updated. See the technical report for details. | |
41059f75 | 709 | |
b5679335 | 710 | dit(bf(-e, --rsh=COMMAND)) This option allows you to choose an alternative |
41059f75 | 711 | remote shell program to use for communication between the local and |
43cd760f WD |
712 | remote copies of rsync. Typically, rsync is configured to use ssh by |
713 | default, but you may prefer to use rsh on a local network. | |
41059f75 | 714 | |
bef49340 | 715 | If this option is used with bf([user@]host::module/path), then the |
4d888108 | 716 | remote shell em(COMMAND) will be used to run an rsync server on the |
bef49340 WD |
717 | remote host, and all data will be transmitted through that remote |
718 | shell connection, rather than through a direct socket connection to a | |
2d4ca358 DD |
719 | running rsync server on the remote host. See the section "CONNECTING |
720 | TO AN RSYNC SERVER OVER A REMOTE SHELL PROGRAM" above. | |
bef49340 | 721 | |
ea7f8108 WD |
722 | Command-line arguments are permitted in COMMAND provided that COMMAND is |
723 | presented to rsync as a single argument. For example: | |
98393ae2 | 724 | |
ea7f8108 | 725 | quote(-e "ssh -p 2234") |
98393ae2 WD |
726 | |
727 | (Note that ssh users can alternately customize site-specific connect | |
728 | options in their .ssh/config file.) | |
729 | ||
41059f75 | 730 | You can also choose the remote shell program using the RSYNC_RSH |
ea7f8108 | 731 | environment variable, which accepts the same range of values as -e. |
41059f75 | 732 | |
735a816e DD |
733 | See also the --blocking-io option which is affected by this option. |
734 | ||
b5679335 | 735 | dit(bf(--rsync-path=PATH)) Use this to specify the path to the copy of |
d73ee7b7 AT |
736 | rsync on the remote machine. Useful when it's not in your path. Note |
737 | that this is the full path to the binary, not just the directory that | |
738 | the binary is in. | |
41059f75 | 739 | |
f177b7cc WD |
740 | dit(bf(-C, --cvs-exclude)) This is a useful shorthand for excluding a |
741 | broad range of files that you often don't want to transfer between | |
742 | systems. It uses the same algorithm that CVS uses to determine if | |
743 | a file should be ignored. | |
744 | ||
745 | The exclude list is initialized to: | |
746 | ||
2a383be0 WD |
747 | quote(RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS .make.state |
748 | .nse_depinfo *~ #* .#* ,* _$* *$ *.old *.bak *.BAK *.orig *.rej | |
749 | .del-* *.a *.olb *.o *.obj *.so *.exe *.Z *.elc *.ln core .svn/) | |
f177b7cc WD |
750 | |
751 | then files listed in a $HOME/.cvsignore are added to the list and any | |
2a383be0 WD |
752 | files listed in the CVSIGNORE environment variable (all cvsignore names |
753 | are delimited by whitespace). | |
754 | ||
f177b7cc | 755 | Finally, any file is ignored if it is in the same directory as a |
2a383be0 | 756 | .cvsignore file and matches one of the patterns listed therein. |
2a383be0 | 757 | See the bf(cvs(1)) manual for more information. |
f177b7cc | 758 | |
b5679335 | 759 | dit(bf(--exclude=PATTERN)) This option allows you to selectively exclude |
41059f75 AT |
760 | certain files from the list of files to be transferred. This is most |
761 | useful in combination with a recursive transfer. | |
762 | ||
41059f75 AT |
763 | You may use as many --exclude options on the command line as you like |
764 | to build up the list of files to exclude. | |
765 | ||
6156e72f | 766 | See the EXCLUDE PATTERNS section for detailed information on this option. |
41059f75 | 767 | |
b5679335 | 768 | dit(bf(--exclude-from=FILE)) This option is similar to the --exclude |
c48b22c8 AT |
769 | option, but instead it adds all exclude patterns listed in the file |
770 | FILE to the exclude list. Blank lines in FILE and lines starting with | |
771 | ';' or '#' are ignored. | |
f8a94f0d DD |
772 | If em(FILE) is bf(-) the list will be read from standard input. |
773 | ||
b5679335 | 774 | dit(bf(--include=PATTERN)) This option tells rsync to not exclude the |
43bd68e5 AT |
775 | specified pattern of filenames. This is useful as it allows you to |
776 | build up quite complex exclude/include rules. | |
777 | ||
6156e72f | 778 | See the EXCLUDE PATTERNS section for detailed information on this option. |
43bd68e5 | 779 | |
b5679335 | 780 | dit(bf(--include-from=FILE)) This specifies a list of include patterns |
43bd68e5 | 781 | from a file. |
c769702f | 782 | If em(FILE) is "-" the list will be read from standard input. |
f8a94f0d | 783 | |
f177b7cc WD |
784 | dit(bf(--files-from=FILE)) Using this option allows you to specify the |
785 | exact list of files to transfer (as read from the specified FILE or "-" | |
c769702f | 786 | for standard input). It also tweaks the default behavior of rsync to make |
f177b7cc WD |
787 | transferring just the specified files and directories easier. For |
788 | instance, the --relative option is enabled by default when this option | |
789 | is used (use --no-relative if you want to turn that off), all | |
790 | directories specified in the list are created on the destination (rather | |
791 | than being noisily skipped without -r), and the -a (--archive) option's | |
792 | behavior does not imply -r (--recursive) -- specify it explicitly, if | |
793 | you want it. | |
794 | ||
795 | The file names that are read from the FILE are all relative to the | |
796 | source dir -- any leading slashes are removed and no ".." references are | |
797 | allowed to go higher than the source dir. For example, take this | |
798 | command: | |
799 | ||
800 | quote(rsync -a --files-from=/tmp/foo /usr remote:/backup) | |
801 | ||
802 | If /tmp/foo contains the string "bin" (or even "/bin"), the /usr/bin | |
803 | directory will be created as /backup/bin on the remote host (but the | |
804 | contents of the /usr/bin dir would not be sent unless you specified -r | |
805 | or the names were explicitly listed in /tmp/foo). Also keep in mind | |
806 | that the effect of the (enabled by default) --relative option is to | |
807 | duplicate only the path info that is read from the file -- it does not | |
808 | force the duplication of the source-spec path (/usr in this case). | |
809 | ||
810 | In addition, the --files-from file can be read from the remote host | |
811 | instead of the local host if you specify a "host:" in front of the file | |
812 | (the host must match one end of the transfer). As a short-cut, you can | |
813 | specify just a prefix of ":" to mean "use the remote end of the | |
814 | transfer". For example: | |
815 | ||
816 | quote(rsync -a --files-from=:/path/file-list src:/ /tmp/copy) | |
817 | ||
818 | This would copy all the files specified in the /path/file-list file that | |
819 | was located on the remote "src" host. | |
820 | ||
821 | dit(bf(-0, --from0)) This tells rsync that the filenames it reads from a | |
822 | file are terminated by a null ('\0') character, not a NL, CR, or CR+LF. | |
823 | This affects --exclude-from, --include-from, and --files-from. | |
f01b6368 WD |
824 | It does not affect --cvs-exclude (since all names read from a .cvsignore |
825 | file are split on whitespace). | |
41059f75 | 826 | |
b5679335 | 827 | dit(bf(-T, --temp-dir=DIR)) This option instructs rsync to use DIR as a |
375a4556 | 828 | scratch directory when creating temporary copies of the files |
41059f75 AT |
829 | transferred on the receiving side. The default behavior is to create |
830 | the temporary files in the receiving directory. | |
831 | ||
b127c1dc | 832 | dit(bf(--compare-dest=DIR)) This option instructs rsync to use em(DIR) on |
e49f61f5 WD |
833 | the destination machine as an additional hierarchy to compare destination |
834 | files against doing transfers (if the files are missing in the destination | |
835 | directory). If a file is found in em(DIR) that is identical to the | |
836 | sender's file, the file will NOT be transferred to the destination | |
837 | directory. This is useful for creating a sparse backup of just files that | |
838 | have changed from an earlier backup. | |
839 | ||
840 | Beginning in version 2.6.4, multiple --compare-dest directories may be | |
841 | provided and rsync will search the list in the order specified until it | |
842 | finds an existing file. That first discovery is used as the basis file, | |
843 | and also determines if the transfer needs to happen. | |
844 | ||
845 | If em(DIR) is a relative path, it is relative to the destination directory. | |
846 | See also --copy-dest and --link-dest. | |
b127c1dc WD |
847 | |
848 | dit(bf(--copy-dest=DIR)) This option behaves like bf(--compare-dest), but | |
849 | rsync will also copy unchanged files found in em(DIR) to the destination | |
850 | directory (using the data in the em(DIR) for an efficient copy). This is | |
851 | useful for doing transfers to a new destination while leaving existing | |
852 | files intact, and then doing a flash-cutover when all files have been | |
e49f61f5 WD |
853 | successfully transferred. |
854 | ||
855 | If em(DIR) is a relative path, it is relative to the destination directory. | |
856 | See also --compare-dest and --link-dest. | |
b127c1dc WD |
857 | |
858 | dit(bf(--link-dest=DIR)) This option behaves like bf(--copy-dest), but | |
e49f61f5 WD |
859 | unchanged files are hard linked from em(DIR) to the destination directory. |
860 | The files must be identical in all preserved attributes (e.g. permissions, | |
861 | possibly ownership) in order for the files to be linked together. | |
8429aa9e WD |
862 | An example: |
863 | ||
864 | verb( | |
865 | rsync -av --link-dest=$PWD/prior_dir host:src_dir/ new_dir/ | |
866 | ) | |
59c95e42 | 867 | |
e49f61f5 WD |
868 | Beginning with version 2.6.4, if more than one --link-dest option is |
869 | specified, rsync will try to find an exact match to link with (searching | |
870 | the list in the order specified), and if not found, a basis file from one | |
871 | of the em(DIR)s will be selected to try to speed up the transfer. | |
872 | ||
873 | If em(DIR) is a relative path, it is relative to the destination directory. | |
874 | See also --compare-dest and --copy-dest. | |
b127c1dc | 875 | |
e0204f56 WD |
876 | Note that rsync versions prior to 2.6.1 had a bug that could prevent |
877 | --link-dest from working properly for a non-root user when -o was specified | |
eb162f3b WD |
878 | (or implied by -a). You can work-around this bug by avoiding the -o option |
879 | when sending to an old rsync. | |
e0204f56 | 880 | |
41059f75 | 881 | dit(bf(-z, --compress)) With this option, rsync compresses any data from |
089e73f8 | 882 | the files that it sends to the destination machine. This |
f39281ae | 883 | option is useful on slow connections. The compression method used is the |
41059f75 AT |
884 | same method that gzip uses. |
885 | ||
886 | Note this this option typically achieves better compression ratios | |
887 | that can be achieved by using a compressing remote shell, or a | |
888 | compressing transport, as it takes advantage of the implicit | |
889 | information sent for matching data blocks. | |
890 | ||
891 | dit(bf(--numeric-ids)) With this option rsync will transfer numeric group | |
4d888108 | 892 | and user IDs rather than using user and group names and mapping them |
41059f75 AT |
893 | at both ends. |
894 | ||
4d888108 | 895 | By default rsync will use the username and groupname to determine |
41059f75 | 896 | what ownership to give files. The special uid 0 and the special group |
14d43f1f | 897 | 0 are never mapped via user/group names even if the --numeric-ids |
41059f75 AT |
898 | option is not specified. |
899 | ||
ec40899b WD |
900 | If a user or group has no name on the source system or it has no match |
901 | on the destination system, then the numeric ID | |
902 | from the source system is used instead. See also the comments on the | |
a2b0471f WD |
903 | "use chroot" setting in the rsyncd.conf manpage for information on how |
904 | the chroot setting affects rsync's ability to look up the names of the | |
905 | users and groups and what you can do about it. | |
41059f75 | 906 | |
b5accaba | 907 | dit(bf(--timeout=TIMEOUT)) This option allows you to set a maximum I/O |
de2fd20e AT |
908 | timeout in seconds. If no data is transferred for the specified time |
909 | then rsync will exit. The default is 0, which means no timeout. | |
41059f75 | 910 | |
c259892c WD |
911 | dit(bf(--port=PORT)) This specifies an alternate TCP port number to use |
912 | rather than the default of 873. This is only needed if you are using the | |
913 | double-colon (::) syntax to connect with an rsync daemon (since the URL | |
914 | syntax has a way to specify the port as a part of the URL). See also this | |
915 | option in the --daemon mode section. | |
916 | ||
b5accaba | 917 | dit(bf(--blocking-io)) This tells rsync to use blocking I/O when launching |
314a74d7 WD |
918 | a remote shell transport. If the remote shell is either rsh or remsh, |
919 | rsync defaults to using | |
b5accaba WD |
920 | blocking I/O, otherwise it defaults to using non-blocking I/O. (Note that |
921 | ssh prefers non-blocking I/O.) | |
64c704f0 | 922 | |
93689aa5 DD |
923 | dit(bf(--no-blocking-io)) Turn off --blocking-io, for use when it is the |
924 | default. | |
925 | ||
3a64ad1f | 926 | dit(bf(--log-format=FORMAT)) This allows you to specify exactly what the |
14d43f1f | 927 | rsync client logs to stdout on a per-file basis. The log format is |
3a64ad1f DD |
928 | specified using the same format conventions as the log format option in |
929 | rsyncd.conf. | |
b6062654 | 930 | |
b72f24c7 AT |
931 | dit(bf(--stats)) This tells rsync to print a verbose set of statistics |
932 | on the file transfer, allowing you to tell how effective the rsync | |
e19452a9 | 933 | algorithm is for your data. |
b72f24c7 | 934 | |
d9fcc198 AT |
935 | dit(bf(--partial)) By default, rsync will delete any partially |
936 | transferred file if the transfer is interrupted. In some circumstances | |
937 | it is more desirable to keep partially transferred files. Using the | |
938 | --partial option tells rsync to keep the partial file which should | |
939 | make a subsequent transfer of the rest of the file much faster. | |
940 | ||
44cad59f | 941 | dit(bf(--partial-dir=DIR)) Turns on --partial mode, but tells rsync to |
b127c1dc | 942 | put a partially transferred file into em(DIR) instead of writing out the |
44cad59f WD |
943 | file to the destination dir. Rsync will also use a file found in this |
944 | dir as data to speed up the transfer (i.e. when you redo the send after | |
945 | rsync creates a partial file) and delete such a file after it has served | |
b90a6d9f WD |
946 | its purpose. Note that if --whole-file is specified (or implied) that an |
947 | existing partial-dir file will not be used to speedup the transfer (since | |
948 | rsync is sending files without using the incremental rsync algorithm). | |
44cad59f WD |
949 | |
950 | Rsync will create the dir if it is missing (just the last dir -- not the | |
951 | whole path). This makes it easy to use a relative path (such as | |
952 | "--partial-dir=.rsync-partial") to have rsync create the partial-directory | |
b127c1dc | 953 | in the destination file's directory (rsync will also try to remove the em(DIR) |
44cad59f WD |
954 | if a partial file was found to exist at the start of the transfer and the |
955 | DIR was specified as a relative path). | |
956 | ||
a33857da WD |
957 | If the partial-dir value is not an absolute path, rsync will also add an |
958 | --exclude of this value at the end of all your existing excludes. This | |
959 | will prevent partial-dir files from being transferred and also prevent the | |
960 | untimely deletion of partial-dir items on the receiving side. An example: | |
961 | the above --partial-dir option would add an "--exclude=.rsync-partial/" | |
962 | rule at the end of any other include/exclude rules. Note that if you are | |
963 | supplying your own include/exclude rules, you may need to manually insert a | |
964 | rule for this directory exclusion somewhere higher up in the list so that | |
965 | it has a high enough priority to be effective (e.g., if your rules specify | |
966 | a trailing --exclude=* rule, the auto-added rule will be ineffective). | |
44cad59f | 967 | |
b4d1e854 WD |
968 | IMPORTANT: the --partial-dir should not be writable by other users or it |
969 | is a security risk. E.g. AVOID "/tmp". | |
970 | ||
971 | You can also set the partial-dir value the RSYNC_PARTIAL_DIR environment | |
972 | variable. Setting this in the environment does not force --partial to be | |
973 | enabled, but rather it effects where partial files go when --partial (or | |
974 | -P) is used. For instance, instead of specifying --partial-dir=.rsync-tmp | |
975 | along with --progress, you could set RSYNC_PARTIAL_DIR=.rsync-tmp in your | |
976 | environment and then just use the -P option to turn on the use of the | |
977 | .rsync-tmp dir for partial transfers. The only time the --partial option | |
978 | does not look for this environment value is when --inplace was also | |
979 | specified (since --inplace conflicts with --partial-dir). | |
44cad59f | 980 | |
eb86d661 AT |
981 | dit(bf(--progress)) This option tells rsync to print information |
982 | showing the progress of the transfer. This gives a bored user | |
983 | something to watch. | |
e2559dbe | 984 | Implies --verbose without incrementing verbosity. |
7b10f91d | 985 | |
68f9910d WD |
986 | When the file is transferring, the data looks like this: |
987 | ||
988 | verb( | |
989 | 782448 63% 110.64kB/s 0:00:04 | |
990 | ) | |
991 | ||
992 | This tells you the current file size, the percentage of the transfer that | |
993 | is complete, the current calculated file-completion rate (including both | |
994 | data over the wire and data being matched locally), and the estimated time | |
995 | remaining in this transfer. | |
996 | ||
c2c14fa2 | 997 | After a file is complete, the data looks like this: |
68f9910d WD |
998 | |
999 | verb( | |
1000 | 1238099 100% 146.38kB/s 0:00:08 (5, 57.1% of 396) | |
1001 | ) | |
1002 | ||
1003 | This tells you the final file size, that it's 100% complete, the final | |
1004 | transfer rate for the file, the amount of elapsed time it took to transfer | |
1005 | the file, and the addition of a total-transfer summary in parentheses. | |
1006 | These additional numbers tell you how many files have been updated, and | |
1007 | what percent of the total number of files has been scanned. | |
1008 | ||
183150b7 WD |
1009 | dit(bf(-P)) The -P option is equivalent to --partial --progress. Its |
1010 | purpose is to make it much easier to specify these two options for a long | |
1011 | transfer that may be interrupted. | |
d9fcc198 | 1012 | |
65575e96 AT |
1013 | dit(bf(--password-file)) This option allows you to provide a password |
1014 | in a file for accessing a remote rsync server. Note that this option | |
bb18e755 | 1015 | is only useful when accessing an rsync server using the built in |
65575e96 | 1016 | transport, not when using a remote shell as the transport. The file |
fc7952e7 AT |
1017 | must not be world readable. It should contain just the password as a |
1018 | single line. | |
65575e96 | 1019 | |
ef5d23eb DD |
1020 | dit(bf(--bwlimit=KBPS)) This option allows you to specify a maximum |
1021 | transfer rate in kilobytes per second. This option is most effective when | |
1022 | using rsync with large files (several megabytes and up). Due to the nature | |
1023 | of rsync transfers, blocks of data are sent, then if rsync determines the | |
1024 | transfer was too fast, it will wait before sending the next data block. The | |
4d888108 | 1025 | result is an average transfer rate equaling the specified limit. A value |
ef5d23eb DD |
1026 | of zero specifies no limit. |
1027 | ||
b9f592fb | 1028 | dit(bf(--write-batch=FILE)) Record a file that can later be applied to |
98f51bfb | 1029 | another identical destination with --read-batch. See the "BATCH MODE" |
b9f592fb | 1030 | section for details. |
6902ed17 | 1031 | |
b9f592fb | 1032 | dit(bf(--read-batch=FILE)) Apply all of the changes stored in FILE, a |
c769702f | 1033 | file previously generated by --write-batch. |
399371e7 | 1034 | If em(FILE) is "-" the batch data will be read from standard input. |
c769702f | 1035 | See the "BATCH MODE" section for details. |
6902ed17 | 1036 | |
e40a46de WD |
1037 | dit(bf(-4, --ipv4) or bf(-6, --ipv6)) Tells rsync to prefer IPv4/IPv6 |
1038 | when creating sockets. This only affects sockets that rsync has direct | |
1039 | control over, such as the outgoing socket when directly contacting an | |
c259892c | 1040 | rsync daemon. See also these options in the --daemon mode section. |
e40a46de | 1041 | |
c8d895de WD |
1042 | dit(bf(--checksum-seed=NUM)) Set the MD4 checksum seed to the integer |
1043 | NUM. This 4 byte checksum seed is included in each block and file | |
1044 | MD4 checksum calculation. By default the checksum seed is generated | |
b9f592fb | 1045 | by the server and defaults to the current time(). This option |
c8d895de WD |
1046 | is used to set a specific checksum seed, which is useful for |
1047 | applications that want repeatable block and file checksums, or | |
1048 | in the case where the user wants a more random checksum seed. | |
1049 | Note that setting NUM to 0 causes rsync to use the default of time() | |
b9f592fb | 1050 | for checksum seed. |
c8d895de | 1051 | |
41059f75 AT |
1052 | enddit() |
1053 | ||
bdf278f7 WD |
1054 | The options allowed when starting an rsync daemon are as follows: |
1055 | ||
1056 | startdit() | |
1057 | ||
1058 | dit(bf(--daemon)) This tells rsync that it is to run as a daemon. The | |
1059 | daemon may be accessed using the bf(host::module) or | |
1060 | bf(rsync://host/module/) syntax. | |
1061 | ||
1062 | If standard input is a socket then rsync will assume that it is being | |
1063 | run via inetd, otherwise it will detach from the current terminal and | |
1064 | become a background daemon. The daemon will read the config file | |
1065 | (rsyncd.conf) on each connect made by a client and respond to | |
1066 | requests accordingly. See the rsyncd.conf(5) man page for more | |
1067 | details. | |
1068 | ||
1069 | dit(bf(--address)) By default rsync will bind to the wildcard address | |
1070 | when run as a daemon with the --daemon option or when connecting to a | |
1071 | rsync server. The --address option allows you to specify a specific IP | |
1072 | address (or hostname) to bind to. This makes virtual hosting possible | |
01f8a115 WD |
1073 | in conjunction with the --config option. See also the "address" global |
1074 | option in the rsyncd.conf manpage. | |
bdf278f7 | 1075 | |
1f69bec4 WD |
1076 | dit(bf(--bwlimit=KBPS)) This option allows you to specify a maximum |
1077 | transfer rate in kilobytes per second for the data the daemon sends. | |
1078 | The client can still specify a smaller --bwlimit value, but their | |
1079 | requested value will be rounded down if they try to exceed it. See the | |
1080 | client version of this option (above) for some extra details. | |
1081 | ||
bdf278f7 WD |
1082 | dit(bf(--config=FILE)) This specifies an alternate config file than |
1083 | the default. This is only relevant when --daemon is specified. | |
1084 | The default is /etc/rsyncd.conf unless the daemon is running over | |
1085 | a remote shell program and the remote user is not root; in that case | |
1086 | the default is rsyncd.conf in the current directory (typically $HOME). | |
1087 | ||
1088 | dit(bf(--no-detach)) When running as a daemon, this option instructs | |
1089 | rsync to not detach itself and become a background process. This | |
1090 | option is required when running as a service on Cygwin, and may also | |
1091 | be useful when rsync is supervised by a program such as | |
1092 | bf(daemontools) or AIX's bf(System Resource Controller). | |
1093 | bf(--no-detach) is also recommended when rsync is run under a | |
1094 | debugger. This option has no effect if rsync is run from inetd or | |
1095 | sshd. | |
1096 | ||
c259892c WD |
1097 | dit(bf(--port=PORT)) This specifies an alternate TCP port number for the |
1098 | daemon to listen on rather than the default of 873. See also the "port" | |
1099 | global option in the rsyncd.conf manpage. | |
bdf278f7 WD |
1100 | |
1101 | dit(bf(-4, --ipv4) or bf(-6, --ipv6)) Tells rsync to prefer IPv4/IPv6 | |
1102 | when creating the incoming sockets that the rsync daemon will use to | |
1103 | listen for connections. One of these options may be required in older | |
1104 | versions of Linux to work around an IPv6 bug in the kernel (if you see | |
1105 | an "address already in use" error when nothing else is using the port, | |
1106 | try specifying --ipv6 or --ipv4 when starting the daemon). | |
1107 | ||
1108 | dit(bf(-h, --help)) When specified after --daemon, print a short help | |
1109 | page describing the options available for starting an rsync daemon. | |
1110 | ||
1111 | enddit() | |
1112 | ||
43bd68e5 AT |
1113 | manpagesection(EXCLUDE PATTERNS) |
1114 | ||
1115 | The exclude and include patterns specified to rsync allow for flexible | |
14d43f1f | 1116 | selection of which files to transfer and which files to skip. |
43bd68e5 | 1117 | |
be92ac6c | 1118 | Rsync builds an ordered list of include/exclude options as specified on |
98606687 | 1119 | the command line. Rsync checks each file and directory |
43bd68e5 | 1120 | name against each exclude/include pattern in turn. The first matching |
23489269 | 1121 | pattern is acted on. If it is an exclude pattern, then that file is |
43bd68e5 AT |
1122 | skipped. If it is an include pattern then that filename is not |
1123 | skipped. If no matching include/exclude pattern is found then the | |
1124 | filename is not skipped. | |
1125 | ||
a4b6f305 WD |
1126 | The filenames matched against the exclude/include patterns are relative |
1127 | to the "root of the transfer". If you think of the transfer as a | |
1128 | subtree of names that are being sent from sender to receiver, the root | |
1129 | is where the tree starts to be duplicated in the destination directory. | |
1130 | This root governs where patterns that start with a / match (see below). | |
1131 | ||
1132 | Because the matching is relative to the transfer-root, changing the | |
20af605e | 1133 | trailing slash on a source path or changing your use of the --relative |
a4b6f305 WD |
1134 | option affects the path you need to use in your matching (in addition to |
1135 | changing how much of the file tree is duplicated on the destination | |
1136 | system). The following examples demonstrate this. | |
1137 | ||
b5ebe6d9 WD |
1138 | Let's say that we want to match two source files, one with an absolute |
1139 | path of "/home/me/foo/bar", and one with a path of "/home/you/bar/baz". | |
1140 | Here is how the various command choices differ for a 2-source transfer: | |
a4b6f305 WD |
1141 | |
1142 | verb( | |
b5ebe6d9 | 1143 | Example cmd: rsync -a /home/me /home/you /dest |
a4b6f305 | 1144 | +/- pattern: /me/foo/bar |
b5ebe6d9 | 1145 | +/- pattern: /you/bar/baz |
a4b6f305 | 1146 | Target file: /dest/me/foo/bar |
b5ebe6d9 | 1147 | Target file: /dest/you/bar/baz |
a4b6f305 | 1148 | |
b5ebe6d9 | 1149 | Example cmd: rsync -a /home/me/ /home/you/ /dest |
b5ebe6d9 WD |
1150 | +/- pattern: /foo/bar (note missing "me") |
1151 | +/- pattern: /bar/baz (note missing "you") | |
a4b6f305 | 1152 | Target file: /dest/foo/bar |
b5ebe6d9 | 1153 | Target file: /dest/bar/baz |
a4b6f305 | 1154 | |
b5ebe6d9 | 1155 | Example cmd: rsync -a --relative /home/me/ /home/you /dest |
b5ebe6d9 WD |
1156 | +/- pattern: /home/me/foo/bar (note full path) |
1157 | +/- pattern: /home/you/bar/baz (ditto) | |
a4b6f305 | 1158 | Target file: /dest/home/me/foo/bar |
b5ebe6d9 | 1159 | Target file: /dest/home/you/bar/baz |
be92ac6c | 1160 | |
b5ebe6d9 | 1161 | Example cmd: cd /home; rsync -a --relative me/foo you/ /dest |
b5ebe6d9 WD |
1162 | +/- pattern: /me/foo/bar (starts at specified path) |
1163 | +/- pattern: /you/bar/baz (ditto) | |
be92ac6c | 1164 | Target file: /dest/me/foo/bar |
b5ebe6d9 | 1165 | Target file: /dest/you/bar/baz |
a4b6f305 WD |
1166 | ) |
1167 | ||
1168 | The easiest way to see what name you should include/exclude is to just | |
1169 | look at the output when using --verbose and put a / in front of the name | |
1170 | (use the --dry-run option if you're not yet ready to copy any files). | |
d1cce1dd | 1171 | |
be92ac6c WD |
1172 | Note that, when using the --recursive (-r) option (which is implied by -a), |
1173 | every subcomponent of | |
a4b6f305 | 1174 | every path is visited from the top down, so include/exclude patterns get |
27b9a19b | 1175 | applied recursively to each subcomponent. |
20af605e WD |
1176 | The exclude patterns actually short-circuit the directory traversal stage |
1177 | when rsync finds the files to send. If a pattern excludes a particular | |
1178 | parent directory, it can render a deeper include pattern ineffectual | |
1179 | because rsync did not descend through that excluded section of the | |
1180 | hierarchy. | |
27b9a19b DD |
1181 | |
1182 | Note also that the --include and --exclude options take one pattern | |
2fb139c1 AT |
1183 | each. To add multiple patterns use the --include-from and |
1184 | --exclude-from options or multiple --include and --exclude options. | |
1185 | ||
14d43f1f | 1186 | The patterns can take several forms. The rules are: |
43bd68e5 AT |
1187 | |
1188 | itemize( | |
d1cce1dd | 1189 | |
43bd68e5 AT |
1190 | it() if the pattern starts with a / then it is matched against the |
1191 | start of the filename, otherwise it is matched against the end of | |
d1cce1dd S |
1192 | the filename. |
1193 | This is the equivalent of a leading ^ in regular expressions. | |
a4b6f305 WD |
1194 | Thus "/foo" would match a file called "foo" at the transfer-root |
1195 | (see above for how this is different from the filesystem-root). | |
d1cce1dd | 1196 | On the other hand, "foo" would match any file called "foo" |
27b9a19b DD |
1197 | anywhere in the tree because the algorithm is applied recursively from |
1198 | top down; it behaves as if each path component gets a turn at being the | |
1199 | end of the file name. | |
43bd68e5 AT |
1200 | |
1201 | it() if the pattern ends with a / then it will only match a | |
a4b6f305 | 1202 | directory, not a file, link, or device. |
43bd68e5 AT |
1203 | |
1204 | it() if the pattern contains a wildcard character from the set | |
a8b9d4ed DD |
1205 | *?[ then expression matching is applied using the shell filename |
1206 | matching rules. Otherwise a simple string match is used. | |
43bd68e5 | 1207 | |
8a7846f9 WD |
1208 | it() the double asterisk pattern "**" will match slashes while a |
1209 | single asterisk pattern "*" will stop at slashes. | |
27b9a19b | 1210 | |
38499c1a WD |
1211 | it() if the pattern contains a / (not counting a trailing /) or a "**" |
1212 | then it is matched against the full filename, including any leading | |
1213 | directory. If the pattern doesn't contain a / or a "**", then it is | |
1214 | matched only against the final component of the filename. Again, | |
1215 | remember that the algorithm is applied recursively so "full filename" can | |
8a7846f9 | 1216 | actually be any portion of a path below the starting directory. |
43bd68e5 AT |
1217 | |
1218 | it() if the pattern starts with "+ " (a plus followed by a space) | |
5a554d5b | 1219 | then it is always considered an include pattern, even if specified as |
a03a9f4e | 1220 | part of an exclude option. The prefix is discarded before matching. |
43bd68e5 AT |
1221 | |
1222 | it() if the pattern starts with "- " (a minus followed by a space) | |
5a554d5b | 1223 | then it is always considered an exclude pattern, even if specified as |
a03a9f4e | 1224 | part of an include option. The prefix is discarded before matching. |
de2fd20e AT |
1225 | |
1226 | it() if the pattern is a single exclamation mark ! then the current | |
eb06fa95 | 1227 | include/exclude list is reset, removing all previously defined patterns. |
43bd68e5 AT |
1228 | ) |
1229 | ||
b7dc46c0 WD |
1230 | The +/- rules are most useful in a list that was read from a file, allowing |
1231 | you to have a single exclude list that contains both include and exclude | |
20af605e | 1232 | options in the proper order. |
27b9a19b | 1233 | |
20af605e WD |
1234 | Remember that the matching occurs at every step in the traversal of the |
1235 | directory hierarchy, so you must be sure that all the parent directories of | |
1236 | the files you want to include are not excluded. This is particularly | |
1237 | important when using a trailing '*' rule. For instance, this won't work: | |
43bd68e5 | 1238 | |
20af605e WD |
1239 | verb( |
1240 | + /some/path/this-file-will-not-be-found | |
1241 | + /file-is-included | |
1242 | - * | |
1243 | ) | |
1244 | ||
1245 | This fails because the parent directory "some" is excluded by the '*' rule, | |
1246 | so rsync never visits any of the files in the "some" or "some/path" | |
1247 | directories. One solution is to ask for all directories in the hierarchy | |
1248 | to be included by using a single rule: --include='*/' (put it somewhere | |
f28bd833 | 1249 | before the --exclude='*' rule). Another solution is to add specific |
20af605e WD |
1250 | include rules for all the parent dirs that need to be visited. For |
1251 | instance, this set of rules works fine: | |
1252 | ||
1253 | verb( | |
1254 | + /some/ | |
1255 | + /some/path/ | |
1256 | + /some/path/this-file-is-found | |
1257 | + /file-also-included | |
1258 | - * | |
1259 | ) | |
1260 | ||
1261 | Here are some examples of exclude/include matching: | |
43bd68e5 AT |
1262 | |
1263 | itemize( | |
1264 | it() --exclude "*.o" would exclude all filenames matching *.o | |
a4b6f305 | 1265 | it() --exclude "/foo" would exclude a file called foo in the transfer-root directory |
43bd68e5 | 1266 | it() --exclude "foo/" would exclude any directory called foo |
a8b9d4ed | 1267 | it() --exclude "/foo/*/bar" would exclude any file called bar two |
a4b6f305 | 1268 | levels below a directory called foo in the transfer-root directory |
a8b9d4ed | 1269 | it() --exclude "/foo/**/bar" would exclude any file called bar two |
a4b6f305 | 1270 | or more levels below a directory called foo in the transfer-root directory |
43bd68e5 | 1271 | it() --include "*/" --include "*.c" --exclude "*" would include all |
5d5811f7 DD |
1272 | directories and C source files |
1273 | it() --include "foo/" --include "foo/bar.c" --exclude "*" would include | |
1274 | only foo/bar.c (the foo/ directory must be explicitly included or | |
1275 | it would be excluded by the "*") | |
43bd68e5 AT |
1276 | ) |
1277 | ||
6902ed17 MP |
1278 | manpagesection(BATCH MODE) |
1279 | ||
2e3c1417 | 1280 | bf(Note:) Batch mode should be considered experimental in this version |
7432ccf4 WD |
1281 | of rsync. The interface and behavior have now stabilized, though, so |
1282 | feel free to try this out. | |
088aac85 DD |
1283 | |
1284 | Batch mode can be used to apply the same set of updates to many | |
1285 | identical systems. Suppose one has a tree which is replicated on a | |
1286 | number of hosts. Now suppose some changes have been made to this | |
1287 | source tree and those changes need to be propagated to the other | |
1288 | hosts. In order to do this using batch mode, rsync is run with the | |
1289 | write-batch option to apply the changes made to the source tree to one | |
1290 | of the destination trees. The write-batch option causes the rsync | |
b9f592fb WD |
1291 | client to store in a "batch file" all the information needed to repeat |
1292 | this operation against other, identical destination trees. | |
1293 | ||
1294 | To apply the recorded changes to another destination tree, run rsync | |
1295 | with the read-batch option, specifying the name of the same batch | |
1296 | file, and the destination tree. Rsync updates the destination tree | |
1297 | using the information stored in the batch file. | |
1298 | ||
1299 | For convenience, one additional file is creating when the write-batch | |
1300 | option is used. This file's name is created by appending | |
73e01568 | 1301 | ".sh" to the batch filename. The .sh file contains |
b9f592fb WD |
1302 | a command-line suitable for updating a destination tree using that |
1303 | batch file. It can be executed using a Bourne(-like) shell, optionally | |
1304 | passing in an alternate destination tree pathname which is then used | |
1305 | instead of the original path. This is useful when the destination tree | |
1306 | path differs from the original destination tree path. | |
1307 | ||
1308 | Generating the batch file once saves having to perform the file | |
1309 | status, checksum, and data block generation more than once when | |
088aac85 | 1310 | updating multiple destination trees. Multicast transport protocols can |
b9f592fb WD |
1311 | be used to transfer the batch update files in parallel to many hosts |
1312 | at once, instead of sending the same data to every host individually. | |
088aac85 | 1313 | |
4602eafa | 1314 | Examples: |
088aac85 DD |
1315 | |
1316 | verb( | |
98f51bfb WD |
1317 | $ rsync --write-batch=foo -a host:/source/dir/ /adest/dir/ |
1318 | $ scp foo* remote: | |
1319 | $ ssh remote ./foo.sh /bdest/dir/ | |
4602eafa WD |
1320 | ) |
1321 | ||
1322 | verb( | |
98f51bfb WD |
1323 | $ rsync --write-batch=foo -a /source/dir/ /adest/dir/ |
1324 | $ ssh remote rsync --read-batch=- -a /bdest/dir/ <foo | |
4602eafa WD |
1325 | ) |
1326 | ||
98f51bfb WD |
1327 | In these examples, rsync is used to update /adest/dir/ from /source/dir/ |
1328 | and the information to repeat this operation is stored in "foo" and | |
1329 | "foo.sh". The host "remote" is then updated with the batched data going | |
1330 | into the directory /bdest/dir. The differences between the two examples | |
1331 | reveals some of the flexibility you have in how you deal with batches: | |
1332 | ||
1333 | itemize( | |
1334 | ||
1335 | it() The first example shows that the initial copy doesn't have to be | |
1336 | local -- you can push or pull data to/from a remote host using either the | |
1337 | remote-shell syntax or rsync daemon syntax, as desired. | |
6902ed17 | 1338 | |
98f51bfb WD |
1339 | it() The first example uses the created "foo.sh" file to get the right |
1340 | rsync options when running the read-batch command on the remote host. | |
1341 | ||
1342 | it() The second example reads the batch data via standard input so that | |
1343 | the batch file doesn't need to be copied to the remote machine first. | |
1344 | This example avoids the foo.sh script because it needed to use a modified | |
1345 | --read-batch option, but you could edit the script file if you wished to | |
1346 | make use of it (just be sure that no other option is trying to use | |
1347 | standard input, such as the "--exclude-from=-" option). | |
1348 | ||
1349 | ) | |
088aac85 DD |
1350 | |
1351 | Caveats: | |
1352 | ||
98f51bfb | 1353 | The read-batch option expects the destination tree that it is updating |
088aac85 DD |
1354 | to be identical to the destination tree that was used to create the |
1355 | batch update fileset. When a difference between the destination trees | |
7432ccf4 WD |
1356 | is encountered the update might be discarded with no error (if the file |
1357 | appears to be up-to-date already) or the file-update may be attempted | |
1358 | and then, if the file fails to verify, the update discarded with an | |
1359 | error. This means that it should be safe to re-run a read-batch operation | |
59d73bf3 | 1360 | if the command got interrupted. If you wish to force the batched-update to |
7432ccf4 | 1361 | always be attempted regardless of the file's size and date, use the -I |
59d73bf3 WD |
1362 | option (when reading the batch). |
1363 | If an error occurs, the destination tree will probably be in a | |
7432ccf4 | 1364 | partially updated state. In that case, rsync can |
088aac85 DD |
1365 | be used in its regular (non-batch) mode of operation to fix up the |
1366 | destination tree. | |
1367 | ||
b9f592fb | 1368 | The rsync version used on all destinations must be at least as new as the |
59d73bf3 WD |
1369 | one used to generate the batch file. Rsync will die with an error if the |
1370 | protocol version in the batch file is too new for the batch-reading rsync | |
1371 | to handle. | |
088aac85 | 1372 | |
98f51bfb | 1373 | The --dry-run (-n) option does not work in batch mode and yields a runtime |
088aac85 DD |
1374 | error. |
1375 | ||
7432ccf4 WD |
1376 | When reading a batch file, rsync will force the value of certain options |
1377 | to match the data in the batch file if you didn't set them to the same | |
1378 | as the batch-writing command. Other options can (and should) be changed. | |
1379 | For instance | |
b9f592fb WD |
1380 | --write-batch changes to --read-batch, --files-from is dropped, and the |
1381 | --include/--exclude options are not needed unless --delete is specified | |
7432ccf4 | 1382 | without --delete-excluded. |
b9f592fb | 1383 | |
98f51bfb WD |
1384 | The code that creates the BATCH.sh file transforms any include/exclude |
1385 | options into a single list that is appended as a "here" document to the | |
1386 | shell script file. An advanced user can use this to modify the exclude | |
1387 | list if a change in what gets deleted by --delete is desired. A normal | |
1388 | user can ignore this detail and just use the shell script as an easy way | |
1389 | to run the appropriate --read-batch command for the batched data. | |
1390 | ||
59d73bf3 WD |
1391 | The original batch mode in rsync was based on "rsync+", but the latest |
1392 | version uses a new implementation. | |
6902ed17 | 1393 | |
eb06fa95 MP |
1394 | manpagesection(SYMBOLIC LINKS) |
1395 | ||
f28bd833 | 1396 | Three basic behaviors are possible when rsync encounters a symbolic |
eb06fa95 MP |
1397 | link in the source directory. |
1398 | ||
1399 | By default, symbolic links are not transferred at all. A message | |
1400 | "skipping non-regular" file is emitted for any symlinks that exist. | |
1401 | ||
1402 | If bf(--links) is specified, then symlinks are recreated with the same | |
1403 | target on the destination. Note that bf(--archive) implies | |
1404 | bf(--links). | |
1405 | ||
1406 | If bf(--copy-links) is specified, then symlinks are "collapsed" by | |
1407 | copying their referent, rather than the symlink. | |
1408 | ||
1409 | rsync also distinguishes "safe" and "unsafe" symbolic links. An | |
1410 | example where this might be used is a web site mirror that wishes | |
1411 | ensure the rsync module they copy does not include symbolic links to | |
1412 | bf(/etc/passwd) in the public section of the site. Using | |
1413 | bf(--copy-unsafe-links) will cause any links to be copied as the file | |
1414 | they point to on the destination. Using bf(--safe-links) will cause | |
4d888108 | 1415 | unsafe links to be omitted altogether. |
eb06fa95 | 1416 | |
7bd0cf5b MP |
1417 | Symbolic links are considered unsafe if they are absolute symlinks |
1418 | (start with bf(/)), empty, or if they contain enough bf("..") | |
1419 | components to ascend from the directory being copied. | |
1420 | ||
d310a212 AT |
1421 | manpagesection(DIAGNOSTICS) |
1422 | ||
14d43f1f | 1423 | rsync occasionally produces error messages that may seem a little |
d310a212 AT |
1424 | cryptic. The one that seems to cause the most confusion is "protocol |
1425 | version mismatch - is your shell clean?". | |
1426 | ||
1427 | This message is usually caused by your startup scripts or remote shell | |
1428 | facility producing unwanted garbage on the stream that rsync is using | |
14d43f1f | 1429 | for its transport. The way to diagnose this problem is to run your |
d310a212 AT |
1430 | remote shell like this: |
1431 | ||
1432 | verb( | |
43cd760f | 1433 | ssh remotehost /bin/true > out.dat |
d310a212 AT |
1434 | ) |
1435 | ||
1436 | then look at out.dat. If everything is working correctly then out.dat | |
2cfeab21 | 1437 | should be a zero length file. If you are getting the above error from |
d310a212 AT |
1438 | rsync then you will probably find that out.dat contains some text or |
1439 | data. Look at the contents and try to work out what is producing | |
14d43f1f | 1440 | it. The most common cause is incorrectly configured shell startup |
d310a212 AT |
1441 | scripts (such as .cshrc or .profile) that contain output statements |
1442 | for non-interactive logins. | |
1443 | ||
e6c64e79 MP |
1444 | If you are having trouble debugging include and exclude patterns, then |
1445 | try specifying the -vv option. At this level of verbosity rsync will | |
1446 | show why each individual file is included or excluded. | |
1447 | ||
55b64e4b MP |
1448 | manpagesection(EXIT VALUES) |
1449 | ||
1450 | startdit() | |
a73de5f3 WD |
1451 | dit(bf(0)) Success |
1452 | dit(bf(1)) Syntax or usage error | |
1453 | dit(bf(2)) Protocol incompatibility | |
1454 | dit(bf(3)) Errors selecting input/output files, dirs | |
1455 | dit(bf(4)) Requested action not supported: an attempt | |
8212336a | 1456 | was made to manipulate 64-bit files on a platform that cannot support |
f28bd833 | 1457 | them; or an option was specified that is supported by the client and |
8212336a | 1458 | not by the server. |
a73de5f3 | 1459 | dit(bf(5)) Error starting client-server protocol |
b5accaba WD |
1460 | dit(bf(10)) Error in socket I/O |
1461 | dit(bf(11)) Error in file I/O | |
a73de5f3 WD |
1462 | dit(bf(12)) Error in rsync protocol data stream |
1463 | dit(bf(13)) Errors with program diagnostics | |
1464 | dit(bf(14)) Error in IPC code | |
1465 | dit(bf(20)) Received SIGUSR1 or SIGINT | |
1466 | dit(bf(21)) Some error returned by waitpid() | |
1467 | dit(bf(22)) Error allocating core memory buffers | |
3c1e2ad9 WD |
1468 | dit(bf(23)) Partial transfer due to error |
1469 | dit(bf(24)) Partial transfer due to vanished source files | |
a73de5f3 | 1470 | dit(bf(30)) Timeout in data send/receive |
55b64e4b MP |
1471 | enddit() |
1472 | ||
de2fd20e AT |
1473 | manpagesection(ENVIRONMENT VARIABLES) |
1474 | ||
1475 | startdit() | |
1476 | ||
1477 | dit(bf(CVSIGNORE)) The CVSIGNORE environment variable supplements any | |
1478 | ignore patterns in .cvsignore files. See the --cvs-exclude option for | |
1479 | more details. | |
1480 | ||
1481 | dit(bf(RSYNC_RSH)) The RSYNC_RSH environment variable allows you to | |
ea7f8108 WD |
1482 | override the default shell used as the transport for rsync. Command line |
1483 | options are permitted after the command name, just as in the -e option. | |
de2fd20e | 1484 | |
4c3b4b25 AT |
1485 | dit(bf(RSYNC_PROXY)) The RSYNC_PROXY environment variable allows you to |
1486 | redirect your rsync client to use a web proxy when connecting to a | |
1487 | rsync daemon. You should set RSYNC_PROXY to a hostname:port pair. | |
1488 | ||
de2fd20e | 1489 | dit(bf(RSYNC_PASSWORD)) Setting RSYNC_PASSWORD to the required |
bb18e755 | 1490 | password allows you to run authenticated rsync connections to an rsync |
de2fd20e AT |
1491 | daemon without user intervention. Note that this does not supply a |
1492 | password to a shell transport such as ssh. | |
1493 | ||
1494 | dit(bf(USER) or bf(LOGNAME)) The USER or LOGNAME environment variables | |
bb18e755 | 1495 | are used to determine the default username sent to an rsync server. |
4b2f6a7c | 1496 | If neither is set, the username defaults to "nobody". |
de2fd20e | 1497 | |
14d43f1f | 1498 | dit(bf(HOME)) The HOME environment variable is used to find the user's |
de2fd20e AT |
1499 | default .cvsignore file. |
1500 | ||
1501 | enddit() | |
1502 | ||
41059f75 AT |
1503 | manpagefiles() |
1504 | ||
30e8c8e1 | 1505 | /etc/rsyncd.conf or rsyncd.conf |
41059f75 AT |
1506 | |
1507 | manpageseealso() | |
1508 | ||
1509 | rsyncd.conf(5) | |
1510 | ||
1511 | manpagediagnostics() | |
1512 | ||
1513 | manpagebugs() | |
1514 | ||
1515 | times are transferred as unix time_t values | |
1516 | ||
f28bd833 | 1517 | When transferring to FAT filesystems rsync may re-sync |
38843171 DD |
1518 | unmodified files. |
1519 | See the comments on the --modify-window option. | |
1520 | ||
b5accaba | 1521 | file permissions, devices, etc. are transferred as native numerical |
41059f75 AT |
1522 | values |
1523 | ||
a87b3b2a | 1524 | see also the comments on the --delete option |
41059f75 | 1525 | |
38843171 DD |
1526 | Please report bugs! See the website at |
1527 | url(http://rsync.samba.org/)(http://rsync.samba.org/) | |
41059f75 AT |
1528 | |
1529 | manpagesection(CREDITS) | |
1530 | ||
1531 | rsync is distributed under the GNU public license. See the file | |
1532 | COPYING for details. | |
1533 | ||
41059f75 | 1534 | A WEB site is available at |
3cd5eb3b MP |
1535 | url(http://rsync.samba.org/)(http://rsync.samba.org/). The site |
1536 | includes an FAQ-O-Matic which may cover questions unanswered by this | |
1537 | manual page. | |
9e3c856a AT |
1538 | |
1539 | The primary ftp site for rsync is | |
1540 | url(ftp://rsync.samba.org/pub/rsync)(ftp://rsync.samba.org/pub/rsync). | |
41059f75 AT |
1541 | |
1542 | We would be delighted to hear from you if you like this program. | |
1543 | ||
9e3c856a AT |
1544 | This program uses the excellent zlib compression library written by |
1545 | Jean-loup Gailly and Mark Adler. | |
41059f75 AT |
1546 | |
1547 | manpagesection(THANKS) | |
1548 | ||
1549 | Thanks to Richard Brent, Brendan Mackay, Bill Waite, Stephen Rothwell | |
7ff701e8 MP |
1550 | and David Bell for helpful suggestions, patches and testing of rsync. |
1551 | I've probably missed some people, my apologies if I have. | |
1552 | ||
ce5f2732 | 1553 | Especial thanks also to: David Dykstra, Jos Backus, Sebastian Krahmer, |
98f51bfb | 1554 | Martin Pool, Wayne Davison, J.W. Schultz. |
41059f75 AT |
1555 | |
1556 | manpageauthor() | |
1557 | ||
ce5f2732 MP |
1558 | rsync was originally written by Andrew Tridgell and Paul Mackerras. |
1559 | Many people have later contributed to it. | |
3cd5eb3b | 1560 | |
a5d74a18 | 1561 | Mailing lists for support and development are available at |
7ff701e8 | 1562 | url(http://lists.samba.org)(lists.samba.org) |