bash prompts

• PS1 → primary prompt string: $
• PS2 → secondary prompt for multi-line input: >
• PS3 → prompt string in select loops: #?
• PS4 → prompt string for execution trace: +

Escape Sequences

• By default this \u@\h:\w\$ is the prompt string.
  • Username @ Machine name : Current Directory Prompt Symbol

Python command line

• ps1 and ps2 are defined in the module sys
• Change sys.ps1 and sys.ps2 if needed
• Override __str__ method to have dynamic prompt
• >>> is the default for python