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`groupmod` command is a Linux command-line tool used to modify properties of user groups, such as user group name and GID.


  • Rename the user group developers to devs:

    groupmod -n devs developers
  • Change the GID of the user group testers to 1001:

    groupmod -g 1001 testers
  • Add the user alice to the user group developers:

    groupmod -a -G developers alice
  • Set the password of the user group staff to password:

    groupmod -p password staff
  • Allow non-unique GID:

    groupmod -o developers
  • Set the GID range of the user group users to 1000-2000:

    groupmod -R 1000-2000 users