Bourne-Again SHell. sh-compatible command line interpreter.

# To start interactive shell:
bash

# To execute a command:
bash -c "command"

# To run commands from a file:
bash file.sh

# To run commands from a file, logging all commands executed to the terminal:
bash -x file.sh

# To run commands from STDIN:
bash -s

# To print the version information of bash (use 'echo $BASH_VERSION' to show just the version string):
bash --version