1. 1. 1. Bug Summary:
         The `groupmod` command's `--help` output shows:

  -U, --users USERS    list of user members of this group

However, this is *misleading. The `-U` option **does not list* users — it *replaces* the current list of members in the group with the provided list.

This could lead to *accidental removal* of existing group members by misunderstanding the help text.

1. 1. 1. Steps to Reproduce:
         1. Run: `groupmod --help`
         2. Observe the line for `-U`
         3. Try using `groupmod -U user1 wheel` expecting it to add user1 — it instead replaces all members

1. 1. 1. Expected Behavior:
         The help message should clearly state that `-U` *overwrites* the group membership.

1. 1. 1. Suggested Fix:
         Update the help text to something like:
           `-U, --users USERS    replace the list of user members of this group`

This makes it consistent with the actual behavior.

1. 1. 1. Environment:

• RHEL 9.6
• `groupmod` from `shadow-utils`

1. 1. 1. Impact:
         Potential administrative mistakes in production environments where sysadmins might accidentally remove all group members (e.g., from `wheel`), creating access or sudo issues.

Please update the documentation/help output for clarity.