The Bourne Again SHell Bash is a powerful commandline shell interface that lets you communicate directly with the kernel at the heart of a computers operating system for total control. Bash is the default shell for Unixbased operating systems Linux Mac OS X and Raspbian on Raspberry Pi devices and is also available to Windows users on the Windows Subsystem for Linux WSL. This book will show you how to use the Bash commandline interface and how to employ Bashs programming abilities. Complete e