How To: UNIX Add A User To A Group

To add a user to a group in Unix, you can use the usermod command with the -aG option.

For example, to add the user bob to the group developers, you can use the following command:

usermod -aG developers bob

This will add the user bob to the group developers without removing them from any other groups they are currently a member of.

To add a user to multiple groups, you can specify the group names separated by a comma. For example, to add the user bob to the groups developers and testers, you can use the following command:

usermod -aG developers,testers bob

Note that you will need to be logged in as the root user or use sudo to run the usermod command.

After adding the user to the group, you may need to log out and log back in for the changes to take effect. You can verify that the user has been added to the group by running the groups command and checking the output.

Overall, the usermod command is a useful tool for managing users and groups in Unix systems.