CHGRP(1)                System General Commands Manual                CHGRP(1)

NAME
     chgrp - change group

SYNOPSIS
     chgrp [-R [-H | -L | -P]] [-fh] group files ...

DESCRIPTION
     The chgrp utility sets the group ID of the file named by each file
     operand to the group ID specified by the group operand.

     Options:

     -H      If the -R option is specified, symbolic links on the command line
             are followed.  (Symbolic links encountered in the tree traversal
             are not followed.)

     -L      If the -R option is specified, all symbolic links are followed.

     -P      If the -R option is specified, no symbolic links are followed.

     -R      Change the group ID for the file hierarchies rooted in the files
             instead of just the files themselves.

     -f      The force option ignores errors, except for usage errors and
             doesn't query about strange modes (unless the user does not have
             proper permissions).

     -h      If file is a symbolic link, the group of the link is changed.

     If -h is not given, unless the -H or -L option is set, chgrp on a sym-
     bolic link always succeeds and has no effect.  The -H, -L and -P options
     are ignored unless the -R option is specified.  In addition, these
     options override each other and the command's actions are determined by
     the last one specified.

     The group operand can be either a group name from the group database, or
     a numeric group ID.  If a group name is also a numeric group ID, the
     operand is used as a group name.

     The user invoking chgrp must belong to the specified group and be the
     owner of the file, or be the super-user.

     Unless invoked by the super-user, chgrp clears the set-user-id and set-
     group-id bits on a file to prevent accidental or mischievous creation of
     set-user-id or set-group-id programs.

     The chgrp utility exits 0 on success, and >0 if an error occurs.

FILES
     /etc/group  Group ID file

SEE ALSO
     chown(2), lchown(2), fts(3), group(5), passwd(5), symlink(7), chown(8)

STANDARDS
     The chgrp utility is expected to be POSIX 1003.2 compatible.

4.2 Berkeley Distribution       March 31, 1994       4.2 Berkeley Distribution