How to Add Users to Groups in Ubuntu Linux

Add a user to a group in Ubuntu Linux

You can add an existing user to a group in Ubuntu Linux to grant them extra permissions, such as allowing them to run specific commands. To add a user to a group, use a command like `sudo usermod -a -G groupname username`. Replace ‘groupname’ with the desired group and ‘username’ with the user’s login name.

Here’s the format for adding a user to a group in Ubuntu Linux.

sudo usermod -a -G groupname username

Add a user to multiple groups.

sudo usermod -a -G group1,group2 username

The commands we’ve covered so far assume the groups already exist.

To add users to groups in Ubuntu Linux, run a command in the terminal. For example, to add the user `geekrewind` to the `sudo` group, you would execute the command `sudo usermod -aG sudo geekrewind`. This command grants `geekrewind` the permissions of the `sudo` group, allowing them to run commands with administrator privileges.

sudo usermod -a -G sudo geekrewind

When adding a user to a group, use the -a option (which means append) to add them to that group without removing them from others. If the group doesn’t exist, the command will return an error.

Change a user’s primary group in Ubuntu Linux

Changing a user’s primary group in Ubuntu Linux controls file and folder access for that user. New files created by a user typically belong to their primary group. You can change this main group using the command ‘sudo usermod -g groupname username’, where ‘groupname’ is the desired group name and ‘username’ is the user’s login name.

In Ubuntu Linux, you can change a user’s primary group. To do this, you’ll use the usermod command with the -g option.

sudo usermod -g groupname username

For example, use the commands below to change the primary group of the user geekrewind to developers.

sudo usermod -g developers geekrewind

You can also define a user’s primary and secondary groups when you create their account. For example, here’s how you’d create a new geekrewind account, setting its primary group to users and its secondary groups to wheel and developers:

sudo useradd -g users -G wheel,developers geekrewind

For instructions on listing all groups in Ubuntu Linux, refer to the related post below.

How to list groups in Ubuntu Linux

That should do it!

Conclusion:

• Adding users to groups in Ubuntu Linux is essential for organizing and administering user accounts.
• Administrators can effectively manage resource access and permissions by understanding the distinction between primary and secondary groups.
• The steps outlined provide clear guidance on adding users to single and multiple groups and changing a user’s primary group.
• Readers can refer to the provided link for instructions on listing all groups in Ubuntu Linux, enhancing their understanding of user and group management.