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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 --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

       --dereference
              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)

       --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 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 chown bugs to bug-coreutilsATgnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>;
       General help using GNU software: <http://www.gnu.org/gethelp/>;
       Report chown translation bugs to <http://translationproject.org/team/>;

COPYRIGHT
       Copyright   (C)   2010   Free   Software   Foundation,   Inc.   License  GPLv3+:  GNU  GPL  version  3  or  later
       <http://gnu.org/licenses/gpl.html>;.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permit-
       ted by law.

SEE ALSO
       chown(2)

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

              info coreutils 'chown invocation'

       should give you access to the complete manual.



GNU coreutils 8.4                 March 2017                          CHOWN(1)