- Learn the Command Line_ Navigating the File System Cheatsheet _ Codecademy
- Learn the Command Line_ Viewing and Changing the File System Cheatsheet _ Codecademy
- Learn the Command Line_ Redirecting Input and Output Cheatsheet _ Codecademy
- Learn the Command Line_ Configuring the Environment Cheatsheet _ Codecademy
- Learn the Command Line_ Bash Scripting Cheatsheet _ Codecademy
Thanks to Codecademy for informatively designed material.