BASH

Bash, the Bourne Again Shell, is the default command-line interpreter in most Linux distros.

Backup files and directories

Built-in variables

Check if bash is running in interactive mode

Check Whether You’re Root

Environment Variables

Helicopter Animation

IFS (internal field separator)

if...then...else

Run a program or script

Troubleshooting

References

http://www.tldp.org/LDP/abs/html/