chown



CHOWN(1)                         User Commands                        CHOWN(1)




NAME

       chown - change file owner and group


SYNOPSIS

       chown [OPTION]... OWNER[:[GROUP]] FILE...
       chown [OPTION]... :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, 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.


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, rather than the  sym-
              bolic 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 ‘:’.  OWNER  and  GROUP  may  be
       numeric as well as symbolic.


AUTHOR

       Written by David MacKenzie and Jim Meyering.


REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.


COPYRIGHT

       Copyright © 2004 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
       PURPOSE.


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 coreutils chown

       should give you access to the complete manual.



chown (coreutils) 5.2.1            July 2005                          CHOWN(1)

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