GNU Bash

Description

GNU Bash is a Unix shell created for the GNU Project. Bash stands for Bourne Again SHell, and is a free replacement for the Bourne Shell. It is widely used to support the GNU operating system.

Bash uses command syntax that is a superset of the Bourne shell command syntax and can execute many of the Bourne shell scripts. The shell comes with a variety of features from the C shell (csh) and Korn shell (ksh). Bash allows interactive command line editing, shell functions, aliases, unlimited-sized indexed arrays, job control, and shell functions. The shell supports command substitution, filename-globbing, piping, control structures, and variables for condition-testing and iteration.

Bash is widely used as the shell for the GNU operating system. It has many features and is constantly being improved. Overall, GNU Bash is a great improvement over the Bourne shell that integrates features from the csh and ash shells, as well.

▶ Other extension used by GNU Bash 4