You can check user groups in Linux with commands like groups, id, getent, and /etc/group to manage permissions easily.

If you’re managing a Linux server, it’s good to be ready with a number of commands that you can use to check user activity – when your users are logging in and how often, what groups they belong to, ...

Linux is a multi-user environment, which means more than one user can use the system at one time. Granted, that mostly takes the form of console access (via SSH), because you can't easily have two ...

The last command allows you to look further back into time to see both current and older logins, beginning with the most recent and moving back into previous logins. The command below reports on ...

Many Linux commands can do more than you might think. The usermod command is one such command, and it can be very handy.