dot_bash_prompt

# Utilise the extended colour palette in the command-line output
if [[ $COLORTERM = gnome-* && $TERM = xterm ]] && infocmp gnome-256color > /dev/null 2>&1; then
  export TERM="gnome-256color"
elif infocmp xterm-256color > /dev/null 2>&1; then
  export TERM="xterm-256color"
fi
if tput setaf 1 > /dev/null 2>&1; then
  tput sgr0
  __ps_bold=$(tput bold)
  __ps_reset=$(tput sgr0)
  __ps_black=$(tput setaf 0)
  __ps_blue=$(tput setaf 33)
  __ps_cyan=$(tput setaf 37)
  __ps_green=$(tput setaf 64)
  __ps_orange=$(tput setaf 166)
  __ps_pink=$(tput setaf 9)
  __ps_purple=$(tput setaf 125)
  __ps_red=$(tput setaf 124)
  __ps_violet=$(tput setaf 61)
  __ps_white=$(tput setaf 15)
  __ps_yellow=$(tput setaf 136)
else
  __ps_bold=""
  __ps_reset="\e[0m"
  __ps_black="\e[1;30m"
  __ps_blue="\e[1;34m"
  __ps_cyan="\e[1;36m"
  __ps_green="\e[1;32m"
  __ps_orange="\e[1;33m"
  __ps_pink="\e[1;31m"
  __ps_purple="\e[1;35m"
  __ps_red="\e[1;31m"
  __ps_violet="\e[1;35m"
  __ps_white="\e[1;37m"
  __ps_yellow="\e[1;33m"
fi

# Highlight the user and host name when logged in as root
if [[ $(id -un) == "root" ]] || [[ "$USER" == "root" ]]; then
  __ps_userStyle="${__ps_pink}"
  __ps_hostStyle="${__ps_pink}"
else
  __ps_userStyle="${__ps_orange}"
  __ps_hostStyle="${__ps_yellow}"
fi

function prompt_command() {

  local exit_code=$?
  if [ $exit_code -ne 0 ]; then
    exit_code=" \[${__ps_reset}${__ps_pink}\](${exit_code})"
  else
    exit_code=""
  fi

  PS1="\[\033]0;\w\007\]"
  PS1+="\[${__ps_bold}${__ps_userStyle}\]\u "           # {user}
  PS1+="\[${__ps_reset}${__ps_white}\]at "              # at
  PS1+="\[${__ps_bold}${__ps_hostStyle}\]\h "           # {host}
  PS1+="\[${__ps_reset}${__ps_white}\]in "              # in
  PS1+="\[${__ps_bold}${__ps_green}\]\w"                # {dir}
  PS1+="${exit_code}"                                    # {exit_code}
  PS1+="\[${__ps_reset}${__ps_white}\] \$ \[${__ps_reset}\]" # $
  export PS1

  PS2="\[${__ps_white}\]→ \[${__ps_reset}\]"
  export PS2
}

export PROMPT_COMMAND="prompt_command"