Linux groupadd is a command line utility used to add groups to a Linux system. It is typically used when the system administrator wants to create or enable a new group on the system. This article provides an overview of the Linux groupadd command and shows some common uses for it.
Linux groupadd is a command line utility used to add groups to a Linux system. It is typically used when the system administrator wants to create or enable a new group on the system.
What is groupadd?
With groupadd, you can easily create a new group and add members to it. The command takes a list of names as input, and will create the group and add the members to it. This is a very handy command if you need to create a new group for yourself or for other people in your computer.
In general, groupadd is a good way to manage groups of files, printers, users, or other resources.
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How to use groupadd?
- To create a new group, use the command “groupadd name” where “name” is the name you want to give the group.
- To add members to a group, use the command “groupadd -m memberid” where “membered” is the ID of the member you want to add to the group.
- To remove a member from a group, use the command “groupdel -r memberid”.
Examples of how to use groupadd
In this article, we will discuss how to use groupadd command in Linux. This command can be used to add a new group to the system.
Before you start groupadd command, you need to identify the name of the new group. The syntax of groupadd command is as follows:
- Groupadd [options] name
- The available options for groupadd command are -g, –group name, and –member. The -g option is used to specify the name of the new group, while the -m option is used to specify the name of the new member of the group.
The following example shows how to use groupadd command to add a new group named staff to the system:
- # groupadd staff
Now you can use the new group by using the id command as follows:
- # id staff
- Output:
- id: 0xbfbfc912 staff uid: 1000(staff) gid: 1000(staff) groups: 1(staff)
Here are some sample options that you may want to use with groupadd command:
- -m – Specify the mode in which the new group will operate. Valid modes are member, primary or anonymous. The default mode is a member.
The following table lists all possible modes and their descriptions:
- Member: The new group will be treated as a regular user account with nobody as its primary user and no special privileges. Any user who belongs to the new group will have access to all resources that it contains ( files, devices, etc.). Primary: The new group will be given a higher privilege than other groups in the system. Get More Category Post Visit.
It will have full read/write access to all files and devices in the system and its members can execute any program without being asked for their password. Anonymous: The new group will be created anonymously and it won’t have an owner or primary user associated with it. This mode is usually used when you want to create a test or development group without giving away too much information about it.
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