What is Bash Shell?Bash is a free shell for UNIX. It is the default shell for most UNIX systems. It has a combination of the C and Korn shell features. Bash shell is not portable. any Bash-specific feature will not function on a system using the Bourne shell or one of its replacements, unless bash is installed as a secondary shell and the script begins with #!/bin/bash. It supports regular and expressions. When bash script starts, it executes commands of different scripts.
What is Bash Shell?Bash stands for "Bourne Again Shell”. A shell is the user interface. Bash is more convenient shell for users among others. The scripts written in Bash are portable among machines, distributions and even operating systems.