CHGRP(1) BSD General Commands Manual CHGRP(1)NAMEchgrp — change group
SYNOPSISchgrp [-fhvx] [-R [-H | -L | -P]] group file ...
The chgrp utility sets the group ID of the file named by each file oper‐
and to the group ID specified by the group operand.
The following options are available:
-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.
This is the default.
-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 does
not query about strange modes (unless the user does not have
-h If the file is a symbolic link, the group ID of the link itself
is changed rather than the file that is pointed to.
-v Cause chgrp to be verbose, showing files as the group is modi‐
fied. If the -v flag is specified more than once, chgrp will
print the filename, followed by the old and new numeric group ID.
-x File system mount points are not traversed.
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 op‐
erand 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.
/etc/group group ID file
The chgrp utility exits 0 on success, and >0 if an error occurs.
In previous versions of this system, symbolic links did not have groups.
The -v and -x options are non-standard and their use in scripts is not
SEE ALSOchown(2), fts(3), group(5), passwd(5), symlink(7), chown(8)STANDARDS
The chgrp utility is expected to be IEEE Std 1003.2 (“POSIX.2”) compati‐
BSD February 21, 2010 BSD