chgrp

The chgrp (change group) command changes the group ownership of a file or directory. While chown can also change the group, chgrp is specifically designed for this single task.

Basic Syntax

chgrp [OPTION]... GROUP FILE...

Common Options

Option	Description
-R, --recursive	Operate on files and directories recursively.
-v, --verbose	Output a diagnostic for every file processed.
-c, --changes	Like verbose but report only when a change is made.
--reference=RFILE	Use RFILE's group rather than specifying a GROUP.

Real-world Examples

1. Change the group of a file:

   chgrp developers script.sh

2. Change the group of a directory and its contents recursively:

   chgrp -R editors /shared/documents/

3. Match the group of another file:

   chgrp --reference=template.txt newfile.txt