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Info Node: (fileutils.info)chgrp invocation

(fileutils.info)chgrp invocation


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`chgrp': Change group ownership
===============================

   `chgrp' changes the group ownership of each given FILE to GROUP
(which can be either a group name or a numeric group id) or to the
group of an existing reference file.  Synopsis:

     chgrp [OPTION]... {GROUP | --reference=REF_FILE} FILE...

   The program accepts the following options.  Also see Note: Common
options.

`-c'
`--changes'
     Verbosely describe the action for each FILE whose group actually
     changes.

`-f'
`--silent'
`--quiet'
     Do not print error messages about files whose group cannot be
     changed.

`--dereference'
     Do not act on symbolic links themselves but rather on what they
     point to.

`-h'
`--no-dereference'
     Act on symbolic links themselves instead of what they point to.
     This is the default.  This mode relies on the `lchown' system call.
     On systems that do not provide the `lchown' system call, `chgrp'
     fails when a file specified on the command line is a symbolic link.
     By default, no diagnostic is issued for symbolic links encountered
     during a recursive traversal, but see `--verbose'.

`--reference=REF_FILE'
     Change the group of each FILE to be the same as that of REF_FILE.
     If REF_FILE is a symbolic link, do not use the group of the
     symbolic link, but rather that of the file it refers to.

`-v'
`--verbose'
     Output a diagnostic for every file processed.  If a symbolic link
     is encountered during a recursive traversal on a system without
     the `lchown' system call, and `--no-dereference' is in effect,
     then issue a diagnostic saying neither the symbolic link nor its
     referent is being changed.

`-R'
`--recursive'
     Recursively change the group ownership of directories and their
     contents.


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