Manual dla chown

CHOWN(1) User Commands CHOWN(1)

chown - change file owner and group

chown [OPTION]... [OWNER][:[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. If only an owner (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 owner is
followed by a colon 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 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 and group are given, but the
owner is omitted, only the group of the files is changed; in this case,
chown performs the same function as chgrp. If only a colon is given,
or if the entire operand is empty, neither the owner nor the group is

Change the owner and/or group of each FILE to OWNER and/or GROUP. With
--reference, change the owner and group of each FILE to those of RFILE.

-c, --changes
like verbose but report only when a change is made

affect the referent of each symbolic link (this is the default),
rather than the symbolic link itself

-h, --no-dereference
affect each symbolic link instead of any referenced file (useful
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

do not treat `/' specially (the default)

fail to operate recursively on `/'

-f, --silent, --quiet
suppress most error messages

use RFILE's owner and group rather than specifying OWNER:GROUP

-R, --recursive
operate on files and directories recursively

-v, --verbose
output a diagnostic for every file processed

The following options modify how a hierarchy is traversed when the -R
option is also specified. If more than one is specified, only the
final one takes effect.

-H if a command line argument is a symbolic link to a directory,
traverse it

-L traverse every symbolic link to a directory encountered

-P do not traverse any symbolic links (default)

--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 `:' following a symbolic OWNER.
OWNER and GROUP may be numeric as well as symbolic.

chown root /u
Change the owner of /u to "root".

chown root:staff /u
Likewise, but also change its group to "staff".

chown -hR root /u
Change the owner of /u and subfiles to "root".

Written by David MacKenzie and Jim Meyering.

Report bugs to <>.

Copyright (C) 2007 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the
terms of the GNU General Public License
<>. There is NO WARRANTY, to the
extent permitted by law.


The full documentation for chown is maintained as a Texinfo manual. If
the info and chown programs are properly installed at your site, the

info chown

should give you access to the complete manual.

GNU coreutils 6.9 March 2007 CHOWN(1)