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9e3c856a | 1 | mailto(rsync-bugs@samba.org) |
a1a440c2 | 2 | manpage(rsync)(1)(29 May 2001)()() |
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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 | manpagedescription() |
19 | ||
20 | rsync is a program that behaves in much the same way that rcp does, | |
21 | but has many more options and uses the rsync remote-update protocol to | |
22 | greatly speedup file transfers when the destination file already | |
23 | exists. | |
24 | ||
25 | The rsync remote-update protocol allows rsync to transfer just the | |
26 | differences between two sets of files across the network link, using | |
27 | an efficient checksum-search algorithm described in the technical | |
28 | report that accompanies this package. | |
29 | ||
30 | Some of the additional features of rsync are: | |
31 | ||
32 | itemize( | |
33 | it() support for copying links, devices, owners, groups and permissions | |
34 | it() exclude and exclude-from options similar to GNU tar | |
35 | it() a CVS exclude mode for ignoring the same files that CVS would ignore | |
36 | it() can use any transparent remote shell, including rsh or ssh | |
37 | it() does not require root privileges | |
38 | it() pipelining of file transfers to minimize latency costs | |
39 | it() support for anonymous or authenticated rsync servers (ideal for | |
40 | mirroring) | |
41 | ) | |
42 | ||
43 | manpagesection(GENERAL) | |
44 | ||
039faa86 | 45 | There are six different ways of using rsync. They are: |
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46 | |
47 | itemize( | |
48 | it() for copying local files. This is invoked when neither | |
49 | source nor destination path contains a : separator | |
50 | ||
51 | it() for copying from the local machine to a remote machine using | |
52 | a remote shell program as the transport (such as rsh or | |
53 | ssh). This is invoked when the destination path contains a | |
54 | single : separator. | |
55 | ||
56 | it() for copying from a remote machine to the local machine | |
6c7c2ef3 | 57 | using a remote shell program. This is invoked when the source |
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58 | contains a : separator. |
59 | ||
60 | it() for copying from a remote rsync server to the local | |
61 | machine. This is invoked when the source path contains a :: | |
946347b8 | 62 | separator or a rsync:// URL. |
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63 | |
64 | it() for copying from the local machine to a remote rsync | |
65 | server. This is invoked when the destination path contains a :: | |
66 | separator. | |
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67 | |
68 | it() for listing files on a remote machine. This is done the | |
69 | same way as rsync transfers except that you leave off the | |
70 | local destination. | |
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71 | ) |
72 | ||
14d43f1f DD |
73 | Note that in all cases (other than listing) at least one of the source |
74 | and destination paths must be local. | |
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75 | |
76 | manpagesection(SETUP) | |
77 | ||
78 | See the file README for installation instructions. | |
79 | ||
80 | Once installed you can use rsync to any machine that you can use rsh | |
81 | to. rsync uses rsh for its communications, unless both the source and | |
82 | destination are local. | |
83 | ||
14d43f1f | 84 | You can also specify an alternative to rsh, by either using the -e |
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85 | command line option, or by setting the RSYNC_RSH environment variable. |
86 | ||
87 | One common substitute is to use ssh, which offers a high degree of | |
88 | security. | |
89 | ||
8e987130 AT |
90 | Note that rsync must be installed on both the source and destination |
91 | machines. | |
92 | ||
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93 | manpagesection(USAGE) |
94 | ||
95 | You use rsync in the same way you use rcp. You must specify a source | |
96 | and a destination, one of which may be remote. | |
97 | ||
98 | Perhaps the best way to explain the syntax is some examples: | |
99 | ||
100 | quote(rsync *.c foo:src/) | |
101 | ||
102 | this would transfer all files matching the pattern *.c from the | |
103 | current directory to the directory src on the machine foo. If any of | |
104 | the files already exist on the remote system then the rsync | |
105 | remote-update protocol is used to update the file by sending only the | |
106 | differences. See the tech report for details. | |
107 | ||
108 | quote(rsync -avz foo:src/bar /data/tmp) | |
109 | ||
14d43f1f | 110 | this would recursively transfer all files from the directory src/bar on the |
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111 | machine foo into the /data/tmp/bar directory on the local machine. The |
112 | files are transferred in "archive" mode, which ensures that symbolic | |
113 | links, devices, attributes, permissions, ownerships etc are preserved | |
14d43f1f | 114 | in the transfer. Additionally, compression will be used to reduce the |
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115 | size of data portions of the transfer. |
116 | ||
117 | quote(rsync -avz foo:src/bar/ /data/tmp) | |
118 | ||
14d43f1f | 119 | a trailing slash on the source changes this behavior to transfer |
41059f75 | 120 | all files from the directory src/bar on the machine foo into the |
14d43f1f | 121 | /data/tmp/. A trailing / on a source name means "copy the |
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122 | contents of this directory". Without a trailing slash it means "copy |
123 | the directory". This difference becomes particularly important when | |
124 | using the --delete option. | |
125 | ||
126 | You can also use rsync in local-only mode, where both the source and | |
127 | destination don't have a ':' in the name. In this case it behaves like | |
128 | an improved copy command. | |
129 | ||
14d43f1f DD |
130 | quote(rsync somehost.mydomain.com::) |
131 | ||
132 | this would list all the anonymous rsync modules available on the host | |
133 | somehost.mydomain.com. (See the following section for more details.) | |
134 | ||
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135 | |
136 | manpagesection(CONNECTING TO AN RSYNC SERVER) | |
137 | ||
138 | It is also possible to use rsync without using rsh or ssh as the | |
139 | transport. In this case you will connect to a remote rsync server | |
140 | running on TCP port 873. | |
141 | ||
4c3b4b25 AT |
142 | You may establish the connetcion via a web proxy by setting the |
143 | environment variable RSYNC_PROXY to a hostname:port pair pointing to | |
144 | your web proxy. Note that your web proxy must allow proxying to port | |
145 | 873, this must be configured in your proxy servers ruleset. | |
146 | ||
14d43f1f | 147 | Using rsync in this way is the same as using it with rsh or ssh except |
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148 | that: |
149 | ||
150 | itemize( | |
151 | it() you use a double colon :: instead of a single colon to | |
152 | separate the hostname from the path. | |
153 | ||
154 | it() the remote server may print a message of the day when you | |
14d43f1f | 155 | connect. |
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156 | |
157 | it() if you specify no path name on the remote server then the | |
158 | list of accessible paths on the server will be shown. | |
14d43f1f | 159 | |
f7632fc6 | 160 | it() if you specify no local destination then a listing of the |
14d43f1f | 161 | specified files on the remote server is provided. |
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162 | ) |
163 | ||
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164 | Some paths on the remote server may require authentication. If so then |
165 | you will receive a password prompt when you connect. You can avoid the | |
166 | password prompt by setting the environment variable RSYNC_PASSWORD to | |
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167 | the password you want to use or using the --password-file option. This |
168 | may be useful when scripting rsync. | |
4c3d16be | 169 | |
3bc67f0c | 170 | WARNING: On some systems environment variables are visible to all |
65575e96 | 171 | users. On those systems using --password-file is recommended. |
3bc67f0c | 172 | |
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173 | manpagesection(RUNNING AN RSYNC SERVER) |
174 | ||
175 | An rsync server is configured using a config file which by default is | |
176 | called /etc/rsyncd.conf. Please see the rsyncd.conf(5) man page for more | |
177 | information. | |
178 | ||
179 | manpagesection(EXAMPLES) | |
180 | ||
181 | Here are some examples of how I use rsync. | |
182 | ||
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183 | To backup my wife's home directory, which consists of large MS Word |
184 | files and mail folders, I use a cron job that runs | |
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185 | |
186 | quote(rsync -Cavz . arvidsjaur:backup) | |
187 | ||
188 | each night over a PPP link to a duplicate directory on my machine | |
189 | "arvidsjaur". | |
190 | ||
191 | To synchronize my samba source trees I use the following Makefile | |
192 | targets: | |
193 | ||
194 | quote( get:nl() | |
195 | rsync -avuzb --exclude '*~' samba:samba/ . | |
196 | ||
197 | put:nl() | |
198 | rsync -Cavuzb . samba:samba/ | |
199 | ||
200 | sync: get put) | |
201 | ||
202 | this allows me to sync with a CVS directory at the other end of the | |
203 | link. I then do cvs operations on the remote machine, which saves a | |
204 | lot of time as the remote cvs protocol isn't very efficient. | |
205 | ||
206 | I mirror a directory between my "old" and "new" ftp sites with the | |
207 | command | |
208 | ||
209 | quote(rsync -az -e ssh --delete ~ftp/pub/samba/ nimbus:"~ftp/pub/tridge/samba") | |
210 | ||
211 | this is launched from cron every few hours. | |
212 | ||
c95da96a AT |
213 | manpagesection(OPTIONS SUMMARY) |
214 | ||
14d43f1f | 215 | Here is a short summary of the options available in rsync. Please refer |
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216 | to the detailed description below for a complete description. |
217 | ||
218 | verb( | |
219 | -v, --verbose increase verbosity | |
b86f0cef | 220 | -q, --quiet decrease verbosity |
c95da96a AT |
221 | -c, --checksum always checksum |
222 | -a, --archive archive mode | |
223 | -r, --recursive recurse into directories | |
224 | -R, --relative use relative path names | |
9ef53907 | 225 | -b, --backup make backups (default ~ suffix) |
5b56cc19 | 226 | --backup-dir make backups into this directory |
9ef53907 | 227 | --suffix=SUFFIX override backup suffix |
c95da96a AT |
228 | -u, --update update only (don't overwrite newer files) |
229 | -l, --links preserve soft links | |
230 | -L, --copy-links treat soft links like regular files | |
b5313607 | 231 | --copy-unsafe-links copy links outside the source tree |
d853783f | 232 | --safe-links ignore links outside the destination tree |
c95da96a AT |
233 | -H, --hard-links preserve hard links |
234 | -p, --perms preserve permissions | |
235 | -o, --owner preserve owner (root only) | |
236 | -g, --group preserve group | |
237 | -D, --devices preserve devices (root only) | |
238 | -t, --times preserve times | |
239 | -S, --sparse handle sparse files efficiently | |
240 | -n, --dry-run show what would have been transferred | |
241 | -W, --whole-file copy whole files, no incremental checks | |
242 | -x, --one-file-system don't cross filesystem boundaries | |
9ef53907 | 243 | -B, --block-size=SIZE checksum blocking size (default 700) |
c95da96a | 244 | -e, --rsh=COMMAND specify rsh replacement |
d9fcc198 | 245 | --rsync-path=PATH specify path to rsync on the remote machine |
c95da96a | 246 | -C, --cvs-exclude auto ignore files in the same way CVS does |
1347d512 | 247 | --existing only update files that already exist |
c95da96a | 248 | --delete delete files that don't exist on the sending side |
b33b791e | 249 | --delete-excluded also delete excluded files on the receiving side |
1347d512 | 250 | --delete-after delete after transferring, not before |
ef55c686 | 251 | --ignore-errors delete even if there are IO errors |
0b73ca12 | 252 | --max-delete=NUM don't delete more than NUM files |
c95da96a AT |
253 | --partial keep partially transferred files |
254 | --force force deletion of directories even if not empty | |
255 | --numeric-ids don't map uid/gid values by user/group name | |
256 | --timeout=TIME set IO timeout in seconds | |
257 | -I, --ignore-times don't exclude files that match length and time | |
f83f0548 | 258 | --size-only only use file size when determining if a file should be transferred |
5b56cc19 | 259 | --modify-window=NUM Timestamp window (seconds) for file match (default=0) |
c95da96a | 260 | -T --temp-dir=DIR create temporary files in directory DIR |
375a4556 | 261 | --compare-dest=DIR also compare destination files relative to DIR |
d9fcc198 | 262 | -P equivalent to --partial --progress |
c95da96a | 263 | -z, --compress compress file data |
2acf81eb | 264 | --exclude=PATTERN exclude files matching PATTERN |
9ef53907 | 265 | --exclude-from=FILE exclude patterns listed in FILE |
2acf81eb | 266 | --include=PATTERN don't exclude files matching PATTERN |
9ef53907 | 267 | --include-from=FILE don't exclude patterns listed in FILE |
c95da96a AT |
268 | --version print version number |
269 | --daemon run as a rsync daemon | |
5c9730a4 | 270 | --address bind to the specified address |
c95da96a AT |
271 | --config=FILE specify alternate rsyncd.conf file |
272 | --port=PORT specify alternate rsyncd port number | |
64c704f0 | 273 | --blocking-io use blocking IO for the remote shell |
c95da96a | 274 | --stats give some file transfer stats |
eb86d661 | 275 | --progress show progress during transfer |
b6062654 | 276 | --log-format=FORMAT log file transfers using specified format |
9ef53907 | 277 | --password-file=FILE get password from FILE |
ef5d23eb | 278 | --bwlimit=KBPS limit I/O bandwidth, KBytes per second |
6902ed17 MP |
279 | -f, --read-batch=FILE read batch file |
280 | -F, --write-batch write batch file | |
c95da96a | 281 | -h, --help show this help screen |
6902ed17 MP |
282 | |
283 | ||
c95da96a AT |
284 | ) |
285 | ||
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286 | manpageoptions() |
287 | ||
288 | rsync uses the GNU long options package. Many of the command line | |
289 | options have two variants, one short and one long. These are shown | |
14d43f1f | 290 | below, separated by commas. Some options only have a long variant. |
b5679335 DD |
291 | The '=' for options that take a parameter is optional; whitespace |
292 | can be used instead. | |
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293 | |
294 | startdit() | |
295 | dit(bf(-h, --help)) Print a short help page describing the options | |
296 | available in rsync | |
297 | ||
298 | dit(bf(--version)) print the rsync version number and exit | |
299 | ||
300 | dit(bf(-v, --verbose)) This option increases the amount of information you | |
14d43f1f | 301 | are given during the transfer. By default, rsync works silently. A |
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302 | single -v will give you information about what files are being |
303 | transferred and a brief summary at the end. Two -v flags will give you | |
304 | information on what files are being skipped and slightly more | |
305 | information at the end. More than two -v flags should only be used if | |
14d43f1f | 306 | you are debugging rsync. |
41059f75 | 307 | |
b86f0cef DD |
308 | dit(bf(-q, --quiet)) This option decreases the amount of information you |
309 | are given during the transfer, notably suppressing information messages | |
310 | from the remote server. This flag is useful when invoking rsync from | |
311 | cron. | |
312 | ||
41059f75 AT |
313 | dit(bf(-I, --ignore-times)) Normally rsync will skip any files that are |
314 | already the same length and have the same time-stamp. This option turns | |
315 | off this behavior. | |
316 | ||
a7d068ab | 317 | dit(bf(--size-only)) Normally rsync will skip any files that are |
f83f0548 AT |
318 | already the same length and have the same time-stamp. With the |
319 | --size-only option files will be skipped if they have the same size, | |
320 | regardless of timestamp. This is useful when starting to use rsync | |
321 | after using another mirroring system which may not preserve timestamps | |
322 | exactly. | |
323 | ||
5b56cc19 AT |
324 | dit(bf(--modify-window)) When comparing two timestamps rsync treats |
325 | the timestamps as being equal if they are within the value of | |
326 | modify_window. This is normally zero, but you may find it useful to | |
327 | set this to a larger value in some situations. In particular, when | |
328 | transferring to/from FAT filesystems which cannot represent times with | |
329 | a 1 second resolution this option is useful. | |
330 | ||
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331 | dit(bf(-c, --checksum)) This forces the sender to checksum all files using |
332 | a 128-bit MD4 checksum before transfer. The checksum is then | |
333 | explicitly checked on the receiver and any files of the same name | |
334 | which already exist and have the same checksum and size on the | |
335 | receiver are skipped. This option can be quite slow. | |
336 | ||
e20c5e95 | 337 | dit(bf(-a, --archive)) This is equivalent to -rlptgoD. It is a quick way |
14d43f1f | 338 | of saying you want recursion and want to preserve everything. |
41059f75 | 339 | |
24986abd AT |
340 | dit(bf(-r, --recursive)) This tells rsync to copy directories |
341 | recursively. If you don't specify this then rsync won't copy | |
342 | directories at all. | |
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343 | |
344 | dit(bf(-R, --relative)) Use relative paths. This means that the full path | |
345 | names specified on the command line are sent to the server rather than | |
346 | just the last parts of the filenames. This is particularly useful when | |
14d43f1f DD |
347 | you want to send several different directories at the same time. For |
348 | example, if you used the command | |
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349 | |
350 | verb(rsync foo/bar/foo.c remote:/tmp/) | |
351 | ||
352 | then this would create a file called foo.c in /tmp/ on the remote | |
353 | machine. If instead you used | |
354 | ||
355 | verb(rsync -R foo/bar/foo.c remote:/tmp/) | |
356 | ||
357 | then a file called /tmp/foo/bar/foo.c would be created on the remote | |
358 | machine. The full path name is preserved. | |
359 | ||
360 | dit(bf(-b, --backup)) With this option preexisting destination files are | |
361 | renamed with a ~ extension as each file is transferred. You can | |
362 | control the backup suffix using the --suffix option. | |
363 | ||
66203a98 AT |
364 | dit(bf(--backup-dir=DIR)) In combination with the --backup option, this |
365 | tells rsync to store all backups in the specified directory. This is | |
366 | very useful for incremental backups. | |
367 | ||
b5679335 | 368 | dit(bf(--suffix=SUFFIX)) This option allows you to override the default |
9ef53907 DD |
369 | backup suffix used with the -b option. The default is a ~. |
370 | ||
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371 | dit(bf(-u, --update)) This forces rsync to skip any files for which the |
372 | destination file already exists and has a date later than the source | |
373 | file. | |
374 | ||
375 | dit(bf(-l, --links)) This tells rsync to recreate symbolic links on the | |
376 | remote system to be the same as the local system. Without this | |
14d43f1f | 377 | option, all symbolic links are skipped. |
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378 | |
379 | dit(bf(-L, --copy-links)) This tells rsync to treat symbolic links just | |
b5313607 DD |
380 | like ordinary files. |
381 | ||
382 | dit(bf(--copy-unsafe-links)) This tells rsync to treat symbolic links that | |
383 | point outside the source tree like ordinary files. Absolute symlinks are | |
384 | also treated like ordinary files, and so are any symlinks in the source | |
385 | path itself when --relative is used. | |
41059f75 | 386 | |
d310a212 AT |
387 | dit(bf(--safe-links)) This tells rsync to ignore any symbolic links |
388 | which point outside the destination tree. All absolute symlinks are | |
389 | also ignored. Using this option in conjunction with --relative may | |
14d43f1f | 390 | give unexpected results. |
d310a212 | 391 | |
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392 | dit(bf(-H, --hard-links)) This tells rsync to recreate hard links on |
393 | the remote system to be the same as the local system. Without this | |
394 | option hard links are treated like regular files. | |
395 | ||
396 | Note that rsync can only detect hard links if both parts of the link | |
397 | are in the list of files being sent. | |
398 | ||
399 | This option can be quite slow, so only use it if you need it. | |
400 | ||
401 | dit(bf(-W, --whole-file)) With this option the incremental rsync algorithm | |
a1a440c2 DD |
402 | is not used and the whole file is sent as-is instead. The transfer may be |
403 | faster if this option is used when the bandwidth between the source and | |
404 | target machines is higher than the bandwidth to disk (especially when the | |
405 | "disk" is actually a networked file system). This is the default when both | |
406 | the source and target are on the local machine. | |
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407 | |
408 | dit(bf(-p, --perms)) This option causes rsync to update the remote | |
409 | permissions to be the same as the local permissions. | |
410 | ||
411 | dit(bf(-o, --owner)) This option causes rsync to update the remote owner | |
412 | of the file to be the same as the local owner. This is only available | |
8bb5aa8f DD |
413 | to the super-user. Note that if the source system is a daemon using chroot, |
414 | the --numeric-ids option is implied because the source system cannot get | |
14d43f1f | 415 | access to the usernames. |
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416 | |
417 | dit(bf(-g, --group)) This option causes rsync to update the remote group | |
460f6b99 DD |
418 | of the file to be the same as the local group. If the receving system is |
419 | not running as the super-user, only groups that the receiver is a member of | |
420 | will be preserved (by group name, not group id number). | |
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421 | |
422 | dit(bf(-D, --devices)) This option causes rsync to transfer character and | |
423 | block device information to the remote system to recreate these | |
424 | devices. This option is only available to the super-user. | |
425 | ||
426 | dit(bf(-t, --times)) This tells rsync to transfer modification times along | |
baf3e504 DD |
427 | with the files and update them on the remote system. Note that if this |
428 | option is not used, the optimization that excludes files that have not been | |
429 | modified cannot be effective; in other words, a missing -t or -a will | |
430 | cause the next transfer to behave as if it used -I, and all files will have | |
431 | their checksums compared and show up in log messages even if they haven't | |
432 | changed. | |
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433 | |
434 | dit(bf(-n, --dry-run)) This tells rsync to not do any file transfers, | |
435 | instead it will just report the actions it would have taken. | |
436 | ||
437 | dit(bf(-S, --sparse)) Try to handle sparse files efficiently so they take | |
438 | up less space on the destination. | |
439 | ||
d310a212 AT |
440 | NOTE: Don't use this option when the destination is a Solaris "tmpfs" |
441 | filesystem. It doesn't seem to handle seeks over null regions | |
442 | correctly and ends up corrupting the files. | |
443 | ||
41059f75 AT |
444 | dit(bf(-x, --one-file-system)) This tells rsync not to cross filesystem |
445 | boundaries when recursing. This is useful for transferring the | |
446 | contents of only one filesystem. | |
447 | ||
1347d512 AT |
448 | dit(bf(--existing)) This tells rsync not to create any new files - |
449 | only update files that already exist on the destination. | |
450 | ||
0b73ca12 AT |
451 | dit(bf(--max-delete=NUM)) This tells rsync not to delete more than NUM |
452 | files or directories. This is useful when mirroring very large trees | |
453 | to prevent disasters. | |
454 | ||
41059f75 | 455 | dit(bf(--delete)) This tells rsync to delete any files on the receiving |
b33b791e DD |
456 | side that aren't on the sending side. Files that are excluded from |
457 | transfer are excluded from being deleted unless you use --delete-excluded. | |
41059f75 | 458 | |
24986abd AT |
459 | This option has no effect if directory recursion is not selected. |
460 | ||
b33b791e DD |
461 | This option can be dangerous if used incorrectly! It is a very good idea |
462 | to run first using the dry run option (-n) to see what files would be | |
463 | deleted to make sure important files aren't listed. | |
41059f75 | 464 | |
3e578a19 AT |
465 | If the sending side detects any IO errors then the deletion of any |
466 | files at the destination will be automatically disabled. This is to | |
467 | prevent temporary filesystem failures (such as NFS errors) on the | |
468 | sending side causing a massive deletion of files on the | |
2c5548d2 | 469 | destination. You can override this with the --ignore-errors option. |
41059f75 | 470 | |
b33b791e DD |
471 | dit(bf(--delete-excluded)) In addition to deleting the files on the |
472 | receiving side that are not on the sending side, this tells rsync to also | |
473 | delete any files on the receiving side that are excluded (see --exclude). | |
474 | ||
57df171b AT |
475 | dit(bf(--delete-after)) By default rsync does file deletions before |
476 | transferring files to try to ensure that there is sufficient space on | |
477 | the receiving filesystem. If you want to delete after transferring | |
478 | then use the --delete-after switch. | |
479 | ||
2c5548d2 DD |
480 | dit(bf(--ignore-errors)) Tells --delete to go ahead and delete files |
481 | even when there are IO errors. | |
482 | ||
41059f75 AT |
483 | dit(bf(--force)) This options tells rsync to delete directories even if |
484 | they are not empty. This applies to both the --delete option and to | |
485 | cases where rsync tries to copy a normal file but the destination | |
15800c7e | 486 | contains a directory of the same name. |
41059f75 | 487 | |
15800c7e DD |
488 | Since this option was added, deletions were reordered to be done depth-first |
489 | so it is hardly ever needed anymore except in very obscure cases. | |
41059f75 | 490 | |
b5679335 | 491 | dit(bf(-B , --block_size=BLOCKSIZE)) This controls the block size used in |
41059f75 AT |
492 | the rsync algorithm. See the technical report for details. |
493 | ||
b5679335 | 494 | dit(bf(-e, --rsh=COMMAND)) This option allows you to choose an alternative |
41059f75 | 495 | remote shell program to use for communication between the local and |
14d43f1f | 496 | remote copies of rsync. By default, rsync will use rsh, but you may |
41059f75 AT |
497 | like to instead use ssh because of its high security. |
498 | ||
499 | You can also choose the remote shell program using the RSYNC_RSH | |
500 | environment variable. | |
501 | ||
735a816e DD |
502 | See also the --blocking-io option which is affected by this option. |
503 | ||
b5679335 | 504 | dit(bf(--rsync-path=PATH)) Use this to specify the path to the copy of |
d73ee7b7 AT |
505 | rsync on the remote machine. Useful when it's not in your path. Note |
506 | that this is the full path to the binary, not just the directory that | |
507 | the binary is in. | |
41059f75 | 508 | |
b5679335 | 509 | dit(bf(--exclude=PATTERN)) This option allows you to selectively exclude |
41059f75 AT |
510 | certain files from the list of files to be transferred. This is most |
511 | useful in combination with a recursive transfer. | |
512 | ||
41059f75 AT |
513 | You may use as many --exclude options on the command line as you like |
514 | to build up the list of files to exclude. | |
515 | ||
14d43f1f | 516 | See the section on exclude patterns for information on the syntax of |
43bd68e5 | 517 | this option. |
41059f75 | 518 | |
b5679335 | 519 | dit(bf(--exclude-from=FILE)) This option is similar to the --exclude |
c48b22c8 AT |
520 | option, but instead it adds all exclude patterns listed in the file |
521 | FILE to the exclude list. Blank lines in FILE and lines starting with | |
522 | ';' or '#' are ignored. | |
41059f75 | 523 | |
b5679335 | 524 | dit(bf(--include=PATTERN)) This option tells rsync to not exclude the |
43bd68e5 AT |
525 | specified pattern of filenames. This is useful as it allows you to |
526 | build up quite complex exclude/include rules. | |
527 | ||
528 | See the section of exclude patterns for information on the syntax of | |
529 | this option. | |
530 | ||
b5679335 | 531 | dit(bf(--include-from=FILE)) This specifies a list of include patterns |
43bd68e5 AT |
532 | from a file. |
533 | ||
41059f75 AT |
534 | dit(bf(-C, --cvs-exclude)) This is a useful shorthand for excluding a |
535 | broad range of files that you often don't want to transfer between | |
536 | systems. It uses the same algorithm that CVS uses to determine if | |
537 | a file should be ignored. | |
538 | ||
539 | The exclude list is initialized to: | |
540 | ||
541 | quote(RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS .make.state | |
542 | .nse_depinfo *~ #* .#* ,* *.old *.bak *.BAK *.orig *.rej .del-* | |
543 | *.a *.o *.obj *.so *.Z *.elc *.ln core) | |
544 | ||
545 | then files listed in a $HOME/.cvsignore are added to the list and any | |
546 | files listed in the CVSIGNORE environment variable (space delimited). | |
547 | ||
548 | Finally in each directory any files listed in the .cvsignore file in | |
549 | that directory are added to the list. | |
550 | ||
b5679335 | 551 | dit(bf(--csum-length=LENGTH)) By default the primary checksum used in |
41059f75 AT |
552 | rsync is a very strong 16 byte MD4 checksum. In most cases you will |
553 | find that a truncated version of this checksum is quite efficient, and | |
554 | this will decrease the size of the checksum data sent over the link, | |
de2fd20e | 555 | making things faster. |
41059f75 AT |
556 | |
557 | You can choose the number of bytes in the truncated checksum using the | |
558 | --csum-length option. Any value less than or equal to 16 is valid. | |
559 | ||
560 | Note that if you use this option then you run the risk of ending up | |
561 | with an incorrect target file. The risk with a value of 16 is | |
562 | microscopic and can be safely ignored (the universe will probably end | |
563 | before it fails) but with smaller values the risk is higher. | |
564 | ||
de2fd20e AT |
565 | Current versions of rsync actually use an adaptive algorithm for the |
566 | checksum length by default, using a 16 byte file checksum to determine | |
567 | if a 2nd pass is required with a longer block checksum. Only use this | |
568 | option if you have read the source code and know what you are doing. | |
569 | ||
b5679335 | 570 | dit(bf(-T, --temp-dir=DIR)) This option instructs rsync to use DIR as a |
375a4556 | 571 | scratch directory when creating temporary copies of the files |
41059f75 AT |
572 | transferred on the receiving side. The default behavior is to create |
573 | the temporary files in the receiving directory. | |
574 | ||
3473b5b4 DD |
575 | dit(bf(--compare-dest=DIR)) This option instructs rsync to use DIR on |
576 | the destination machine as an additional directory to compare destination | |
577 | files against when doing transfers. This is useful for doing transfers to | |
578 | a new destination while leaving existing files intact, and then doing a | |
579 | flash-cutover when all files have been successfully transferred (for | |
580 | example by moving directories around and removing the old directory, | |
581 | although this requires also doing the transfer with -I to avoid skipping | |
582 | files that haven't changed). This option increases the usefulness of | |
583 | --partial because partially transferred files will remain in the new | |
584 | temporary destination until they have a chance to be completed. If DIR is | |
585 | a relative path, it is relative to the destination directory. | |
375a4556 | 586 | |
41059f75 | 587 | dit(bf(-z, --compress)) With this option, rsync compresses any data from |
089e73f8 | 588 | the files that it sends to the destination machine. This |
41059f75 AT |
589 | option is useful on slow links. The compression method used is the |
590 | same method that gzip uses. | |
591 | ||
592 | Note this this option typically achieves better compression ratios | |
593 | that can be achieved by using a compressing remote shell, or a | |
594 | compressing transport, as it takes advantage of the implicit | |
595 | information sent for matching data blocks. | |
596 | ||
597 | dit(bf(--numeric-ids)) With this option rsync will transfer numeric group | |
598 | and user ids rather than using user and group names and mapping them | |
599 | at both ends. | |
600 | ||
601 | By default rsync will use the user name and group name to determine | |
602 | what ownership to give files. The special uid 0 and the special group | |
14d43f1f | 603 | 0 are never mapped via user/group names even if the --numeric-ids |
41059f75 AT |
604 | option is not specified. |
605 | ||
8bb5aa8f DD |
606 | If the source system is a daemon using chroot, or if a user or group name |
607 | does not exist on the destination system, then the numeric id from the | |
608 | source system is used instead. | |
41059f75 | 609 | |
de2fd20e AT |
610 | dit(bf(--timeout=TIMEOUT)) This option allows you to set a maximum IO |
611 | timeout in seconds. If no data is transferred for the specified time | |
612 | then rsync will exit. The default is 0, which means no timeout. | |
41059f75 AT |
613 | |
614 | dit(bf(--daemon)) This tells rsync that it is to run as a rsync | |
615 | daemon. If standard input is a socket then rsync will assume that it | |
616 | is being run via inetd, otherwise it will detach from the current | |
5315b793 | 617 | terminal and become a background daemon. The daemon will read the |
41059f75 AT |
618 | config file (/etc/rsyncd.conf) on each connect made by a client and |
619 | respond to requests accordingly. See the rsyncd.conf(5) man page for more | |
620 | details. | |
621 | ||
5c9730a4 | 622 | dit(bf(--address)) By default rsync will bind to the wildcard address |
e30f0657 AT |
623 | when run as a daemon with the --daemon option or when connecting to a |
624 | rsync server. The --address option allows you to specify a specific IP | |
625 | address (or hostname) to bind to. This makes virtual hosting possible | |
626 | in conjunction with the --config option. | |
5c9730a4 | 627 | |
b5679335 | 628 | dit(bf(--config=FILE)) This specifies an alternate config file than |
5315b793 | 629 | the default /etc/rsyncd.conf. This is only relevant when --daemon is |
41059f75 AT |
630 | specified. |
631 | ||
b5679335 | 632 | dit(bf(--port=PORT)) This specifies an alternate TCP port number to use |
14d43f1f | 633 | rather than the default port 873. |
41059f75 | 634 | |
735a816e DD |
635 | dit(bf(--blocking-io)) This tells rsync to use blocking IO when launching |
636 | a remote shell transport. If -e or --rsh are not specified or are set to | |
637 | the default "rsh", this defaults to blocking IO, otherwise it defaults to | |
638 | non-blocking IO. You may find the --blocking-io option is needed for some | |
639 | remote shells that can't handle non-blocking IO. Ssh prefers blocking IO. | |
64c704f0 | 640 | |
3a64ad1f | 641 | dit(bf(--log-format=FORMAT)) This allows you to specify exactly what the |
14d43f1f | 642 | rsync client logs to stdout on a per-file basis. The log format is |
3a64ad1f DD |
643 | specified using the same format conventions as the log format option in |
644 | rsyncd.conf. | |
b6062654 | 645 | |
b72f24c7 AT |
646 | dit(bf(--stats)) This tells rsync to print a verbose set of statistics |
647 | on the file transfer, allowing you to tell how effective the rsync | |
e19452a9 | 648 | algorithm is for your data. |
b72f24c7 | 649 | |
d9fcc198 AT |
650 | dit(bf(--partial)) By default, rsync will delete any partially |
651 | transferred file if the transfer is interrupted. In some circumstances | |
652 | it is more desirable to keep partially transferred files. Using the | |
653 | --partial option tells rsync to keep the partial file which should | |
654 | make a subsequent transfer of the rest of the file much faster. | |
655 | ||
eb86d661 AT |
656 | dit(bf(--progress)) This option tells rsync to print information |
657 | showing the progress of the transfer. This gives a bored user | |
658 | something to watch. | |
659 | ||
7b10f91d AT |
660 | This option is normally combined with -v. Using this option without |
661 | the -v option will produce weird results on your display. | |
662 | ||
d9fcc198 AT |
663 | dit(bf(-P)) The -P option is equivalent to --partial --progress. I |
664 | found myself typing that combination quite often so I created an | |
665 | option to make it easier. | |
666 | ||
65575e96 AT |
667 | dit(bf(--password-file)) This option allows you to provide a password |
668 | in a file for accessing a remote rsync server. Note that this option | |
669 | is only useful when accessing a rsync server using the built in | |
670 | transport, not when using a remote shell as the transport. The file | |
fc7952e7 AT |
671 | must not be world readable. It should contain just the password as a |
672 | single line. | |
65575e96 | 673 | |
ef5d23eb DD |
674 | dit(bf(--bwlimit=KBPS)) This option allows you to specify a maximum |
675 | transfer rate in kilobytes per second. This option is most effective when | |
676 | using rsync with large files (several megabytes and up). Due to the nature | |
677 | of rsync transfers, blocks of data are sent, then if rsync determines the | |
678 | transfer was too fast, it will wait before sending the next data block. The | |
679 | result is an average transfer rate equalling the specified limit. A value | |
680 | of zero specifies no limit. | |
681 | ||
6902ed17 MP |
682 | dit(bf(--read-batch)) Apply a previously generated change batch. |
683 | ||
684 | dit(bf(--write-batch)) Generate a set of files that can be transferred | |
685 | as a batch update. | |
686 | ||
41059f75 AT |
687 | enddit() |
688 | ||
43bd68e5 AT |
689 | manpagesection(EXCLUDE PATTERNS) |
690 | ||
691 | The exclude and include patterns specified to rsync allow for flexible | |
14d43f1f | 692 | selection of which files to transfer and which files to skip. |
43bd68e5 | 693 | |
14d43f1f DD |
694 | rsync builds a ordered list of include/exclude options as specified on |
695 | the command line. When a filename is encountered, rsync checks the | |
43bd68e5 | 696 | name against each exclude/include pattern in turn. The first matching |
23489269 | 697 | pattern is acted on. If it is an exclude pattern, then that file is |
43bd68e5 AT |
698 | skipped. If it is an include pattern then that filename is not |
699 | skipped. If no matching include/exclude pattern is found then the | |
700 | filename is not skipped. | |
701 | ||
27b9a19b DD |
702 | Note that when used with -r (which is implied by -a), every subcomponent of |
703 | every path is visited from top down, so include/exclude patterns get | |
704 | applied recursively to each subcomponent. | |
705 | ||
706 | Note also that the --include and --exclude options take one pattern | |
2fb139c1 AT |
707 | each. To add multiple patterns use the --include-from and |
708 | --exclude-from options or multiple --include and --exclude options. | |
709 | ||
14d43f1f | 710 | The patterns can take several forms. The rules are: |
43bd68e5 AT |
711 | |
712 | itemize( | |
713 | it() if the pattern starts with a / then it is matched against the | |
714 | start of the filename, otherwise it is matched against the end of | |
27b9a19b DD |
715 | the filename. Thus "/foo" would match a file called "foo" at the base of |
716 | the tree. On the other hand, "foo" would match any file called "foo" | |
717 | anywhere in the tree because the algorithm is applied recursively from | |
718 | top down; it behaves as if each path component gets a turn at being the | |
719 | end of the file name. | |
43bd68e5 AT |
720 | |
721 | it() if the pattern ends with a / then it will only match a | |
722 | directory, not a file, link or device. | |
723 | ||
724 | it() if the pattern contains a wildcard character from the set | |
a8b9d4ed DD |
725 | *?[ then expression matching is applied using the shell filename |
726 | matching rules. Otherwise a simple string match is used. | |
43bd68e5 | 727 | |
27b9a19b DD |
728 | it() if the pattern includes a double asterisk "**" then all wildcards in |
729 | the pattern will match slashes, otherwise they will stop at slashes. | |
730 | ||
43bd68e5 AT |
731 | it() if the pattern contains a / (not counting a trailing /) then it |
732 | is matched against the full filename, including any leading | |
733 | directory. If the pattern doesn't contain a / then it is matched | |
27b9a19b DD |
734 | only against the final component of the filename. Again, remember |
735 | that the algorithm is applied recursively so "full filename" can | |
736 | actually be any portion of a path. | |
43bd68e5 AT |
737 | |
738 | it() if the pattern starts with "+ " (a plus followed by a space) | |
5a554d5b | 739 | then it is always considered an include pattern, even if specified as |
43bd68e5 AT |
740 | part of an exclude option. The "+ " part is discarded before matching. |
741 | ||
742 | it() if the pattern starts with "- " (a minus followed by a space) | |
5a554d5b | 743 | then it is always considered an exclude pattern, even if specified as |
43bd68e5 | 744 | part of an include option. The "- " part is discarded before matching. |
de2fd20e AT |
745 | |
746 | it() if the pattern is a single exclamation mark ! then the current | |
747 | exclude list is reset, removing all previous exclude patterns. | |
43bd68e5 AT |
748 | ) |
749 | ||
750 | The +/- rules are most useful in exclude lists, allowing you to have a | |
751 | single exclude list that contains both include and exclude options. | |
27b9a19b DD |
752 | |
753 | If you end an exclude list with --exclude '*', note that since the | |
754 | algorithm is applied recursively that unless you explicitly include | |
755 | parent directories of files you want to include then the algorithm | |
756 | will stop at the parent directories and never see the files below | |
757 | them. To include all directories, use --include '*/' before the | |
758 | --exclude '*'. | |
43bd68e5 | 759 | |
328fcf11 | 760 | Here are some exclude/include examples: |
43bd68e5 AT |
761 | |
762 | itemize( | |
763 | it() --exclude "*.o" would exclude all filenames matching *.o | |
764 | it() --exclude "/foo" would exclude a file in the base directory called foo | |
765 | it() --exclude "foo/" would exclude any directory called foo | |
a8b9d4ed DD |
766 | it() --exclude "/foo/*/bar" would exclude any file called bar two |
767 | levels below a base directory called foo | |
768 | it() --exclude "/foo/**/bar" would exclude any file called bar two | |
769 | or more levels below a base directory called foo | |
43bd68e5 | 770 | it() --include "*/" --include "*.c" --exclude "*" would include all |
5d5811f7 DD |
771 | directories and C source files |
772 | it() --include "foo/" --include "foo/bar.c" --exclude "*" would include | |
773 | only foo/bar.c (the foo/ directory must be explicitly included or | |
774 | it would be excluded by the "*") | |
43bd68e5 AT |
775 | ) |
776 | ||
6902ed17 MP |
777 | manpagesection(BATCH MODE) |
778 | ||
779 | The following call generates 4 files that encapsulate the information | |
780 | for synchronizing the contents of bf(target_dir) with the updates found in | |
781 | bf(src_dir) | |
782 | ||
783 | quote( | |
784 | $ rsync -F [other rsync options here] \nl() | |
785 | /somewhere/src_dir /somewhere/target_dir | |
786 | ) | |
787 | ||
788 | The generated files are labeled with a common timestamp: | |
789 | ||
790 | itemize( | |
791 | it() bf(rsync_argvs.<timestamp>) command-line arguments | |
792 | it() bf(rsync_flist.<timestamp>) rsync internal file metadata | |
793 | it() bf(rsync_csums.<timestamp>) rsync checksums | |
794 | it() bf(rsync_delta.<timestamp>) data blocks for file update & change | |
795 | ) | |
796 | ||
797 | See bf(http://www.ils.unc.edu/i2dsi/unc_rsync+.html) for papers and technical | |
798 | reports. | |
799 | ||
d310a212 AT |
800 | manpagesection(DIAGNOSTICS) |
801 | ||
14d43f1f | 802 | rsync occasionally produces error messages that may seem a little |
d310a212 AT |
803 | cryptic. The one that seems to cause the most confusion is "protocol |
804 | version mismatch - is your shell clean?". | |
805 | ||
806 | This message is usually caused by your startup scripts or remote shell | |
807 | facility producing unwanted garbage on the stream that rsync is using | |
14d43f1f | 808 | for its transport. The way to diagnose this problem is to run your |
d310a212 AT |
809 | remote shell like this: |
810 | ||
811 | verb( | |
812 | rsh remotehost /bin/true > out.dat | |
813 | ) | |
814 | ||
815 | then look at out.dat. If everything is working correctly then out.dat | |
2cfeab21 | 816 | should be a zero length file. If you are getting the above error from |
d310a212 AT |
817 | rsync then you will probably find that out.dat contains some text or |
818 | data. Look at the contents and try to work out what is producing | |
14d43f1f | 819 | it. The most common cause is incorrectly configured shell startup |
d310a212 AT |
820 | scripts (such as .cshrc or .profile) that contain output statements |
821 | for non-interactive logins. | |
822 | ||
e6c64e79 MP |
823 | If you are having trouble debugging include and exclude patterns, then |
824 | try specifying the -vv option. At this level of verbosity rsync will | |
825 | show why each individual file is included or excluded. | |
826 | ||
55b64e4b MP |
827 | manpagesection(EXIT VALUES) |
828 | ||
829 | startdit() | |
8212336a MP |
830 | dit(bf(RERR_SYNTAX 1)) Syntax or usage error |
831 | dit(bf(RERR_PROTOCOL 2)) Protocol incompatibility | |
832 | dit(bf(RERR_FILESELECT 3)) Errors selecting input/output files, dirs | |
833 | ||
834 | dit(bf(RERR_UNSUPPORTED 4)) Requested action not supported: an attempt | |
835 | was made to manipulate 64-bit files on a platform that cannot support | |
836 | them; or an option was speciifed that is supported by the client and | |
837 | not by the server. | |
838 | ||
839 | dit(bf(RERR_SOCKETIO 10)) Error in socket IO | |
840 | dit(bf(RERR_FILEIO 11)) Error in file IO | |
841 | dit(bf(RERR_STREAMIO 12)) Error in rsync protocol data stream | |
842 | dit(bf(RERR_MESSAGEIO 13)) Errors with program diagnostics | |
843 | dit(bf(RERR_IPC 14)) Error in IPC code | |
844 | dit(bf(RERR_SIGNAL 20)) Received SIGUSR1 or SIGINT | |
845 | dit(bf(RERR_WAITCHILD 21)) Some error returned by waitpid() | |
846 | dit(bf(RERR_MALLOC 22)) Error allocating core memory buffers | |
847 | dit(bf(RERR_TIMEOUT 30)) Timeout in data send/receive | |
55b64e4b MP |
848 | enddit() |
849 | ||
de2fd20e AT |
850 | manpagesection(ENVIRONMENT VARIABLES) |
851 | ||
852 | startdit() | |
853 | ||
854 | dit(bf(CVSIGNORE)) The CVSIGNORE environment variable supplements any | |
855 | ignore patterns in .cvsignore files. See the --cvs-exclude option for | |
856 | more details. | |
857 | ||
858 | dit(bf(RSYNC_RSH)) The RSYNC_RSH environment variable allows you to | |
859 | override the default shell used as the transport for rsync. This can | |
860 | be used instead of the -e option. | |
861 | ||
4c3b4b25 AT |
862 | dit(bf(RSYNC_PROXY)) The RSYNC_PROXY environment variable allows you to |
863 | redirect your rsync client to use a web proxy when connecting to a | |
864 | rsync daemon. You should set RSYNC_PROXY to a hostname:port pair. | |
865 | ||
de2fd20e AT |
866 | dit(bf(RSYNC_PASSWORD)) Setting RSYNC_PASSWORD to the required |
867 | password allows you to run authenticated rsync connections to a rsync | |
868 | daemon without user intervention. Note that this does not supply a | |
869 | password to a shell transport such as ssh. | |
870 | ||
871 | dit(bf(USER) or bf(LOGNAME)) The USER or LOGNAME environment variables | |
872 | are used to determine the default username sent to a rsync server. | |
873 | ||
14d43f1f | 874 | dit(bf(HOME)) The HOME environment variable is used to find the user's |
de2fd20e AT |
875 | default .cvsignore file. |
876 | ||
877 | enddit() | |
878 | ||
41059f75 AT |
879 | manpagefiles() |
880 | ||
881 | /etc/rsyncd.conf | |
882 | ||
883 | manpageseealso() | |
884 | ||
885 | rsyncd.conf(5) | |
886 | ||
887 | manpagediagnostics() | |
888 | ||
889 | manpagebugs() | |
890 | ||
891 | times are transferred as unix time_t values | |
892 | ||
893 | file permissions, devices etc are transferred as native numerical | |
894 | values | |
895 | ||
a87b3b2a | 896 | see also the comments on the --delete option |
41059f75 AT |
897 | |
898 | Please report bugs! The rsync bug tracking system is online at | |
9e3c856a | 899 | url(http://rsync.samba.org/rsync/)(http://rsync.samba.org/rsync/) |
41059f75 AT |
900 | |
901 | manpagesection(VERSION) | |
902 | This man page is current for version 2.0 of rsync | |
903 | ||
904 | manpagesection(CREDITS) | |
905 | ||
906 | rsync is distributed under the GNU public license. See the file | |
907 | COPYING for details. | |
908 | ||
41059f75 | 909 | A WEB site is available at |
3cd5eb3b MP |
910 | url(http://rsync.samba.org/)(http://rsync.samba.org/). The site |
911 | includes an FAQ-O-Matic which may cover questions unanswered by this | |
912 | manual page. | |
9e3c856a AT |
913 | |
914 | The primary ftp site for rsync is | |
915 | url(ftp://rsync.samba.org/pub/rsync)(ftp://rsync.samba.org/pub/rsync). | |
41059f75 AT |
916 | |
917 | We would be delighted to hear from you if you like this program. | |
918 | ||
9e3c856a AT |
919 | This program uses the excellent zlib compression library written by |
920 | Jean-loup Gailly and Mark Adler. | |
41059f75 AT |
921 | |
922 | manpagesection(THANKS) | |
923 | ||
924 | Thanks to Richard Brent, Brendan Mackay, Bill Waite, Stephen Rothwell | |
925 | and David Bell for helpful suggestions and testing of rsync. I've | |
926 | probably missed some people, my apologies if I have. | |
927 | ||
928 | ||
929 | manpageauthor() | |
930 | ||
931 | rsync was written by Andrew Tridgell and Paul Mackerras. They may be | |
9e3c856a | 932 | contacted via email at tridge@samba.org and |
41059f75 AT |
933 | Paul.Mackerras@cs.anu.edu.au |
934 | ||
3cd5eb3b MP |
935 | rsync is now also maintained by Martin Pool <mbp@samba.org> |
936 | ||
937 |