Which command can be used to delete a group from a Linux system?

The `groupdel` command is specifically designed and used to delete an existing group from the system by removing its entry from `/etc/group` and `/etc/gshadow`.

`groupmod` is used to modify an existing group's properties, such as its name or GID, not to delete it.

`groups` is used to display the groups a user belongs to.

`groupedit` is not a standard command for group management in Linux; `groupadd`, `groupmod`, and `groupdel` are the standard utilities.