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CHGRP (1) | General commands | Unix Manual Pages | :man


chgrp - change group


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See Also


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 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.


group ID file


.Ex -std


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)


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