Linux groupadd and groupmod Commands

In Linux, the groupadd and groupmod commands are used to manage groups. Below is a description of each command along with examples.

groupadd Command

The groupadd command is used to create a new group in the system.

Syntax:

groupadd [options] group_name

Example:

# Create a new group named "developers"
sudo groupadd developers

This command creates a new group called developers.

groupmod Command

The groupmod command is used to modify an existing group.

Syntax:

groupmod [options] group_name

Example:

# Rename the group "developers" to "devs"
sudo groupmod -n devs developers

This command renames the group developers to devs.

Options

• -g GID: Assign a specific group ID (GID).
• -a -G GID: Assign secondary group ID (GID).
• -n new_name: Rename the group.

groupdel Command

The groupdel command is used to delete a group from the system.

Syntax:

groupdel group_name

Example:

# Delete the group "abhishek"
sudo groupdel abhishek

This command deletes the group abhishek.

Note: You cannot delete a group that is currently being used by any user or process.