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CHOWN(1)                         User Commands                        CHOWN(1)



NAME
       chown - change file owner and group

SYNOPSIS
       chown [OPTION]... [OWNER][:[GROUP]] FILE...
       chown [OPTION]... --reference=RFILE FILE...

DESCRIPTION
       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 changed.

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

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

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

       -h, --no-dereference
              affect  each  symbolic  link  instead of any referenced file (useful only on
              systems that can change the ownership of a symlink)

       --from=CURRENT_OWNER:CURRENT_GROUP
              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 attribute.

       --no-preserve-root do not treat '/' specially (the default)

       --preserve-root
              fail to operate recursively on '/'

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

       --reference=RFILE
              use RFILE's owner and group rather than the specifying OWNER:GROUP values

       -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

       --version
              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.

EXAMPLES
       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".

AUTHOR
       Written by David MacKenzie and Jim Meyering.

REPORTING BUGS
       Report bugs to <bug-coreutils AT gnu.org>.

COPYRIGHT
       Copyright (C) 2006 Free Software Foundation, Inc.
       This  is  free  software.  You may redistribute copies of it under the terms of the
       GNU General Public License  <http://www.gnu.org/licenses/gpl.html>.   There  is  NO
       WARRANTY, to the extent permitted by law.

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

              info chown

       should give you access to the complete manual.



chown 5.97                         May 2008                           CHOWN(1)

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