Bash - The GNU Bourne Again Shell
GNU Bash is the default command interpreter on many GNU / Linux systems. Many scripts are written in Bash, and together with the other tools from GNU / Linux installation can Bash be used for many things.
Bash is also the default shell on many GNU / Linux systems. The shell receives commands from the user in a terminal or console. UiB offers Bash or tcsh as the default shell on GNU / Linux and UNIX systems. You can select shell in SEBRA.
Customizing the shell
Bash reads some files on startup and closing. You can read more about the documentation for Bash. For example, try the command man bash or info bash on a GNU / Linux system.