Log files. They're there for a reason -- to keep track of what goes on behind the velvet curtain of your operating system. When things go wrong, entries are added to those log files, so you can view ...

Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...

Log rotation, a normal thing on Linux systems, keeps any particular log file from becoming too large, yet ensures that sufficient details on system activities are still available for proper system ...

How to monitor a Linux log file in real time Your email has been sent This must-know Linux command will make troubleshooting considerably easier. Quick: What’s the first thing you do when you need to ...

Exiting a script and logging out are very different, but sometimes you may need to log out of your Linux system from within a script. Here's how to do it. Most of the time, exiting a script leaves you ...

Linux 101: How to easily view real-time log entries with tail Your email has been sent The tail command makes it easy to view log entries as they are written in real-time. Jack Wallen shows you how to ...