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, ...

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 ...

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 ...