dot_bash_prompt

#!/bin/bash

Reset='\e[0m'           # Reset all formatting

# Foreground (text)
DefaultFg='\e[39m'
Black='\e[30m'
Red='\e[31m'
Green='\e[32m'
Yellow='\e[33m'
Blue='\e[34m'
Magenta='\e[35m'
Cyan='\e[36m'
LightGray='\e[37m'
DarkGray='\e[90m'
LightRed='\e[91m'
LightGreen='\e[92m'
LightYellow='\e[93m'
LightBlue='\e[94m'
LightMagenta='\e[95m'
LightCyan='\e[96m'
White='\e[97m'

Bold='\e[1m'
NoBold='\e[21m'
Dim='\e[2m'
NoDim='\e[22m'
Under='\e[4m'
NoUnder='\e[24m'
Blink='\e[5m'           # Doesn't work on most terminal emulators
NoBlink='\e[25m'
Invert='\e[7m'
NoInvert='\e[27m'
Hidden='\e[8m'
NoHidden='\e[27m'

# Background
DefaultBg='\e[39m'
BlackBg='\e[40m'
RedBg='\e[41m'
GreenBg='\e[42m'
YellowBg='\e[43m'
BlueBg='\e[44m'
PurpleBg='\e[45m'
CyanBg='\e[46m'
LightGrayBg='\e[47m'
DarkGrayBg='\e[100m'
LightRedBg='\e[101m'
LightGreenBg='\e[102m'
LightYellowBg='\e[103m'
LightBlueBg='\e[104m'
LightPurpleBg='\e[105m'
LightCyanBg='\e[106m'
WhiteBg='\e[107m'

function purty_prompt {
    if [[ $USER == "root" ]]
    then
        local USER_COLOR="\\[$Bold\\]\\[$Red\\]"
        local USER_PROMPT="\\[$Bold\\]\\[$Red\\]\\$\\[$DefaultFg\\]\\[$NoBold\\]"
    else
        local USER_COLOR="$Yellow"
        local USER_PROMPT="\$(if [ \$? = 0 ]; then echo '\\[$Green\\]\$\\[$DefaultFg\\]'; else echo '\\[$Red\\]\$\\[$DefaultFg\\]'; fi)"
    fi
    PS1="\[\e]0;\u@\h: \w\007\]\[$Reset\]\
\[$LightGray\]\
[\[$USER_COLOR\]\u\[$Reset\]\[$LightGray\]@\[$Magenta\]\h\[$LightGray\]]\
\e(0q\e(B\[$LightGray\]\
[\[$Reset\]\!\[$LightGray\]]\
\e(0q\e(B\[$LightGray\]\
[\[$Reset\]\D{%H:%M}\[$LightGray\]]\
\e(0q\e(B\e(0q\e(B\
[\[$Blue\]\w\[$LightGray\]]\[$Reset\]\n\
\[$LightGray\]${USER_PROMPT}\[$Reset\] "
}

purty_prompt
unset purty_prompt