chgrp [-fhv] [-R [-H | -L | -P]] group file …
sets the group ID of
| force, ignore errors, ( except for usage errors) and doesn't query about
strange modes (unless the user does not have proper permissions).
|Change the group ID for the file hierarchies rooted in the files instead of just the files themselves.
override each other and the last one specified is used.
| symbolic links are prevented from being followed. default.
| all symbolic links are followed.
| symbolic links on the command are followed but not those encountered in the tree traversal
| For symbolic link, the group ID of the link is changed not the target.
|verbose, shows files as modified, non-standard and its use in scripts is not recommended.
group can be a group name or group ID.
The user invoking
chgrp must belong to the group and be the owner of the file, or be
Exits 0 on success, and >0 if an error occurs.
/etc/group group ID file
group, passwd, symlink, chown, ls,