Bash Prompt

.bashrc

## Prompt
export PROMPT_COMMAND=__prompt_command  # Func to gen PS1 after CMDs

function __prompt_command() {
    local EXIT="$?"             # This needs to be first
    PS1=""

    local RCol='\[\e[0m\]'

    local Red='\[\e[0;31m\]'
    local Gre='\[\e[0;32m\]'
    local BYel='\[\e[1;33m\]'
    local BBlu='\[\e[1;34m\]'
    local Pur='\[\e[0;35m\]'

    if [ `whoami` == 'root' ]; then
        PS1+="${Red}\u${RCol}"      # Add red if exit code non 0
    else
        PS1+="${Gre}\u${RCol}"
    fi


    PS1+="${RCol}@" 

    if [ `hostname` == 'orange' ]; then
        PS1+="${BBlu}"      # Add red if exit code non 0
    else
        PS1+="${Red}"
    fi

    PS1+="\h ${Pur}\W${BYel}"
    
    if [ $EXIT != 0 ]; then
        PS1+="${Red} ERR=${EXIT} ${RCol}"
    fi
    PS1+="$ ${RCol}"
}