Introduction to the Command Line is a visual guide that teaches over 200 the most important Linux, Unix, and BSD shell commands in a simple and straight forward manner. Command line programs covered in this book are demonstrated with typical usage to aid in the learning process and help you master the command line quickly and easily. Covers over 200 commands for popular Linux, BSD, and Unix systems including: Commercial Unix AIX HP-UX Solaris BSD FreeBSD OpenBSD NetBSD macOS (the core of macOS is based on many BSD components) Linux RedHat/Fedora Debian/Ubuntu New Third Edition Content: New information related to changes to various Linux, Unix, and BSD platforms. More commands! Introduction to Bash shell scripting! A regular expressions primer! Bonus content: Command Line One-Liners! New cover artwork. Improvements to e-book formatting.