How to change only the group?

To change only the group ownership of a file or directory in Linux, you can use the chgrp command. The basic syntax is:

chgrp NEW_GROUP FILE

• NEW_GROUP is the name of the new group you want to assign.
• FILE is the name of the file or directory whose group ownership you want to change.

For example, to change the group of a file named example.txt to developers, you would use:

chgrp developers example.txt

This command will change the group ownership without affecting the user ownership.