Bash Prompt

External

• https://unix.stackexchange.com/questions/100959/how-can-i-change-my-bash-prompt-to-show-my-working-directory
• https://linuxconfig.org/bash-prompt-basics

Internal

• bash
• Bash Built-in Variables

Overview

Set PS1 environment variable in .bashrc. PS1 is a primary prompt variable. PS2 bash shell variable is a secondary prompt. This prompt is displayed if the shell waits for a user input.

If used in PS1 definition, the following control character are rendered to various pieces of information:

• \w working directory
• \u username
• \H host name
• \h host name up to the first "."

Re-evaluate the Prompt on Directory Change

Introduce the command to be executed with backslash dollar instead of simply dollar:

Incorrect:

export PS1="$(some-prompt-generating-function)"

Correct:

export PS1="\$(some-prompt-generating-function)"