CHGRP (1) | General commands | Unix Manual Pages | :man▋
chgrp - change group
chgrp [-fhv] [ -R [-H-| -L -| -P ] ] group
The chgrp utility sets the group ID of the file named by each file operand 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 proper permissions). |
|-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 modified. If the -v flag is specified more than once, chgrp will print the filename, followed by the old and new numeric group ID. |
The -H , -L and -P options are ignored unless the -R option is specified. In addition, these options override each other and the commands 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.
In previous versions of this system, symbolic links did not have groups.
The -v option is non-standard and its use in scripts is not recommended.
chown(2), fts(3), group(5), passwd(5), symlink(7), chown(8)