Command-line essentials When you ssh into a Unix-like system, the system looks up your user account information and spawns a new shell process based on your preferences.

Learning Bash is really useful, especially if you want to unlock the full power of a Unix or Linux system. Here are some of the most compelling reasons to look at Bash scripting as something to learn.

Several methods to add menus and progress bars to shell scripts are explained. Floating-point math, number conversion and generation of random passwords and numbers also are covered. The volume ends ...