If you want to create a system group using the groupadd command, which option should be used?

To create a system group using the groupadd command, the correct option is to use the -r flag. This flag is specifically designed to indicate that the group being created is a system group, which typically has a Group ID (GID) less than 1000 on most Linux systems.

System groups are used for system-related tasks and applications, and they help isolate user permissions for processes running under these groups. When you specify the -r option, the system automatically assigns a suitable non-duplicating GID for the new system group. This helps in maintaining the organization of the various groups on the system.

On the other hand, the other options like -g, -s, and -d serve different functions. The -g option allows you to set a specific GID for the new group rather than automatically assigning one, which is not directly related to creating a system group. The -s option can be used with user management commands like useradd to specify a shell but does not apply to group management. Lastly, the -d option is utilized for specifying a home directory when creating a user, not a group.

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