How to use bash shell

Q. How do I use bash shell? What command I need to type use bash shell?

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A. GNU Bourne-Again Shell is default shell on most Linux systems (distributions). So when you open terminal from X Windows (KDE/Gnome) you directly opens a bash shell. Bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file.

To find out your shell version type:
$ echo $SHELL
Output:

/bin/csh

If you are using different shell, just type bash at command prompt and load bash shell:
$ bash

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