Thanks to the following sources, from which I have stolen over the years.

• Arabesque
• Sensible Bash
• https://github.com/twerth/dotfiles
• https://coderwall.com/p/oqtj8w/the-single-most-useful-thing-in-bash

• .bash_profile vs .bashrc
• GNU Readline
• Better Bash History
• Bash Reference Manual
• Bash Prompt HOWTO