chown - change file owner and group
chown [OPTION]... OWNER[:[GROUP]] FILE...
chown [OPTION]... :GROUP FILE...
chown [OPTION]... --reference=RFILE FILE...
This manual page documents the GNU version of chown. chown changes the
user and/or group ownership of each given file, according to its first
non-option argument, which is interpreted as follows. If only a user
name (or numeric user ID) is given, that user is made the owner of each
given file, and the files' group is not changed. If the user name is
followed by a colon or dot and a group name (or numeric group ID), with
no spaces between them, the group ownership of the files is changed as
well. If a colon or dot but no group name follows the user name, that
user is made the owner of the files and the group of the files is
changed to that user's login group. If the colon or dot and group are
given, but the user name is omitted, only the group of the files is
changed; in this case, chown performs the same function as chgrp.
Change the owner and/or group of each FILE to OWNER and/or GROUP.
like verbose but report only when a change is made
affect the referent of each symbolic link, rather than the symbolic
affect symbolic links instead of any referenced file (available
only on systems that can change the ownership of a symlink)
change the owner and/or group of each file only if its current
owner and/or group match those specified here. Either may be
omitted, in which case a match is not required for the omitted
-f, --silent, --quiet
suppress most error messages
use RFILE's owner and group rather than the specified
operate on files and directories recursively
output a diagnostic for every file processed
--help display this help and exit
output version information and exit
Owner is unchanged if missing. Group is unchanged if missing, but
changed to login group if implied by a `:'. OWNER and GROUP may be
numeric as well as symbolic.
Written by David MacKenzie.
Report bugs to <email@example.com>.
Copyright (C) 2001 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is
NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
The full documentation for chown is maintained as a Texinfo manual. If
the info and chown programs are properly installed at your site, the
should give you access to the complete manual.
chown (fileutils) 4.1 March 2002 CHOWN(1)
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