Learn the basics of directory management in Linux using the command line tool.

SSH known hosts store server fingerprints to prevent security risks. Learn how to use SSH known host commands to manage entries on Linux systems.

A series of commands ranging from simple to fairly complex will help you count lines, words or individual characters on the Linux command line.

Linux tricks can help you get work done faster, especially when they're easy. Here are some ways to find files, reuse prior commands, stop processes and more.