App-shells/bash

Bash is the GNU Project's Bourne Again SHell, a complete implementation of the IEEE POSIX and Open Group shell specification with interactive command line editing, job control on architectures that support it, csh-like features such as history substitution and brace expansion, and a slew of other features. [1]

More resources

• Bash by Example, Part 1
• Bash by Example, Part 2
• Bash by Example, Part 3