a - prompt customization intro you can customize cli prompt by editing the PS1 variable for permanent changes edit nano ~/.bashrc for BASH ~/.zshrc for Zsh and ~/.config/fish/config.fish for Fish example → PS1="TestPrompt " export PS1 and then to apply changes source ~/.bashrc but you can test and play with it temporarily by editing the PS1 on the terminal example to only show the username → PS1="\u "
b - prompt escape codes Most common escape codes for shell prompt \d → current date \H → full hostname \h → hostname \n → new line character \r → carriage return \t → time in 24 hour format \@ → time in 12 hour format with AM/PM \u → username \w → working directory \W → last part of the working directory \! → history id of the command \[ → start of non-printing character sequence ]\ → end for char sequence example → shows username - working directory last
c - prompt colors codes List of colors: \033[30m → Black \033[30m → Dark gray \033[31m → Red \033[31m → Light red \033[32m →Green \033[32m →Light green \033[33m → Brown \033[34m → Blue \033[34m → Light blue \033[33m → Yellow \033[35m → Purple \033[35m → Light purple \033[36m → Cyan \033[36m → Light cyan \033[37m → Light gray \033[37m → White example 1 → shows username - working directory last in purple color and then back to white
d - prompt background colors and text format codes List of background colors: \033[40m → Black \033[44m → Blue \033[41m → Red \033[45m → Purple \033[42m → Green \033[46m → Cyan \033[43m → Brown \033[47m → Light gray example 1 → shows username - working directory last in purple color and white background and then back to default List of text format codes: \033[0m → Reset formatting to default. \033[1m → Bold text. \033[4m → Underline text. \033[7m → inverse example 1 → shows username - working directory last in purple color and white background, underlined and then back to default