mailto(rsync-bugs@samba.org)
-manpage(rsync)(1)(1 Jan 2004)()()
+manpage(rsync)(1)(24 Mar 2004)()()
manpagename(rsync)(faster, flexible replacement for rcp)
manpagesynopsis()
--suffix=SUFFIX backup suffix (default ~ w/o --backup-dir)
-u, --update update only (don't overwrite newer files)
-l, --links copy symlinks as symlinks
- -L, --copy-links copy the referent of symlinks
- --copy-unsafe-links copy links outside the source tree
- --safe-links ignore links outside the destination tree
+ -L, --copy-links copy the referent of all symlinks
+ --copy-unsafe-links copy the referent of "unsafe" symlinks
+ --safe-links ignore "unsafe" symlinks
-H, --hard-links preserve hard links
-p, --perms preserve permissions
-o, --owner preserve owner (root only)
symlink on the destination.
dit(bf(-L, --copy-links)) When symlinks are encountered, the file that
-they point to is copied, rather than the symlink.
+they point to (the referent) is copied, rather than the symlink.
dit(bf(--copy-unsafe-links)) This tells rsync to copy the referent of
-symbolic links that point outside the source tree. Absolute symlinks
+symbolic links that point outside the copied tree. Absolute symlinks
are also treated like ordinary files, and so are any symlinks in the
source path itself when --relative is used.
dit(bf(--safe-links)) This tells rsync to ignore any symbolic links
-which point outside the destination tree. All absolute symlinks are
+which point outside the copied tree. All absolute symlinks are
also ignored. Using this option in conjunction with --relative may
give unexpected results.
dit(bf(-o, --owner)) This option causes rsync to set the owner of the
destination file to be the same as the source file. On most systems,
-only the super-user can set file ownership. The preservation is done
-primarily by name, but falls back to using the ID number if the ID has
-no name on the sending side or has no match on the receiving side.
-See also the --numeric-ids option and the "use chroot" setting in the
-rsyncd.conf manpage.
+only the super-user can set file ownership. By default, the preservation
+is done by name, but may fall back to using the ID number in some
+circumstances. See the --numeric-ids option for a full discussion.
dit(bf(-g, --group)) This option causes rsync to set the group of the
destination file to be the same as the source file. If the receiving
program is not running as the super-user, only groups that the
-receiver is a member of will be preserved. The preservation is done
-primarily by name, but falls back to using the ID number if the ID has
-no name on the sending side or has no match on the receiving side.
-See also the --numeric-ids option and the "use chroot" setting in the
-rsyncd.conf manpage.
+receiver is a member of will be preserved. By default, the preservation
+is done by name, but may fall back to using the ID number in some
+circumstances. See the --numeric-ids option for a full discussion.
dit(bf(-D, --devices)) This option causes rsync to transfer character and
block device information to the remote system to recreate these
You may use as many --exclude options on the command line as you like
to build up the list of files to exclude.
-See the EXCLUDE PATTERNS section for information on the syntax of
-this option.
+See the EXCLUDE PATTERNS section for detailed information on this option.
dit(bf(--exclude-from=FILE)) This option is similar to the --exclude
option, but instead it adds all exclude patterns listed in the file
specified pattern of filenames. This is useful as it allows you to
build up quite complex exclude/include rules.
-See the EXCLUDE PATTERNS section for information on the syntax of
-this option.
+See the EXCLUDE PATTERNS section for detailed information on this option.
dit(bf(--include-from=FILE)) This specifies a list of include patterns
from a file.
If a user or group has no name on the source system or it has no match
on the destination system, then the numeric ID
from the source system is used instead. See also the comments on the
-"use chroot" setting in the rsyncd.conf manpage.
+"use chroot" setting in the rsyncd.conf manpage for information on how
+the chroot setting affects rsync's ability to look up the names of the
+users and groups and what you can do about it.
dit(bf(--timeout=TIMEOUT)) This option allows you to set a maximum I/O
timeout in seconds. If no data is transferred for the specified time
skipped. If no matching include/exclude pattern is found then the
filename is not skipped.
-The filenames matched against the exclude/include patterns
-are relative to the destination directory, or "top
-directory", so patterns should not include the path elements
-of the source or destination directories. The only way in
-which a pattern will match the absolute path of a file or
-directory is if the source path is the root directory.
+The filenames matched against the exclude/include patterns are relative
+to the "root of the transfer". If you think of the transfer as a
+subtree of names that are being sent from sender to receiver, the root
+is where the tree starts to be duplicated in the destination directory.
+This root governs where patterns that start with a / match (see below).
+
+Because the matching is relative to the transfer-root, changing the
+trailing slash on the source path or changing your use of the --relative
+option affects the path you need to use in your matching (in addition to
+changing how much of the file tree is duplicated on the destination
+system). The following examples demonstrate this.
+
+Let's say that we want to match a source filename that has an absolute
+path of "/home/me/foo/bar", here is how the various command choices can
+differ:
+
+verb(
+ Example cmd: rsync -a /home/me /dest
+ Source root: /home ("me" is part of transfer)
+ +/- pattern: /me/foo/bar
+ Target file: /dest/me/foo/bar
+
+ Example cmd: rsync -a /home/me/ /dest
+ Source root: /home/me (due to trailing /)
+ +/- pattern: /foo/bar (note missing "me")
+ Target file: /dest/foo/bar
+
+ Example cmd: rsync -a --relative /home/me/ /dest
+ Source root: /home/me
+ +/- pattern: /home/me/foo/bar (note full path)
+ Target file: /dest/home/me/foo/bar
+)
+
+The easiest way to see what name you should include/exclude is to just
+look at the output when using --verbose and put a / in front of the name
+(use the --dry-run option if you're not yet ready to copy any files).
Note that when used with -r (which is implied by -a), every subcomponent of
-every path is visited from top down, so include/exclude patterns get
+every path is visited from the top down, so include/exclude patterns get
applied recursively to each subcomponent.
Note also that the --include and --exclude options take one pattern
start of the filename, otherwise it is matched against the end of
the filename.
This is the equivalent of a leading ^ in regular expressions.
- Thus "/foo" would match a file called "foo" at the top of the
- transferred tree.
+ Thus "/foo" would match a file called "foo" at the transfer-root
+ (see above for how this is different from the filesystem-root).
On the other hand, "foo" would match any file called "foo"
anywhere in the tree because the algorithm is applied recursively from
top down; it behaves as if each path component gets a turn at being the
end of the file name.
- The leading / does not make the pattern an absolute pathname.
it() if the pattern ends with a / then it will only match a
- directory, not a file, link or device.
+ directory, not a file, link, or device.
it() if the pattern contains a wildcard character from the set
*?[ then expression matching is applied using the shell filename
itemize(
it() --exclude "*.o" would exclude all filenames matching *.o
- it() --exclude "/foo" would exclude a file called foo in the top directory
+ it() --exclude "/foo" would exclude a file called foo in the transfer-root directory
it() --exclude "foo/" would exclude any directory called foo
it() --exclude "/foo/*/bar" would exclude any file called bar two
- levels below a directory called foo in the top directory
+ levels below a directory called foo in the transfer-root directory
it() --exclude "/foo/**/bar" would exclude any file called bar two
- or more levels below a directory called foo in the top directory
+ or more levels below a directory called foo in the transfer-root directory
it() --include "*/" --include "*.c" --exclude "*" would include all
directories and C source files
it() --include "foo/" --include "foo/bar.c" --exclude "*" would include
Example:
verb(
-$ rsync --write-batch=pfx -a /source/dir/ /adest/dir/
-$ rcp pfx.rsync_* remote:
-$ ssh remote rsync --read-batch=pfx -a /bdest/dir/
-# or alternatively
-$ ssh remote ./pfx.rsync_argvs /bdest/dir/
+ $ rsync --write-batch=pfx -a /source/dir/ /adest/dir/
+ $ rcp pfx.rsync_* remote:
+ $ ssh remote rsync --read-batch=pfx -a /bdest/dir/
+ # or alternatively
+ $ ssh remote ./pfx.rsync_argvs /bdest/dir/
)
In this example, rsync is used to update /adest/dir/ with /source/dir/
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff