PS1

best_ps1

sudo apt install bash-git-prompt

PS1='$(
  # choose symbol & color
  last_exit=${LAST_EXIT:-0}
  if git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
    symbol="⎇"; color="\033[0;32m"   # green in git repo
  else
    symbol="λ"; color="\033[0;36m"   # cyan otherwise
  fi
  [ "$last_exit" -ne 0 ] && symbol="✘" && color="\033[0;31m"  # red on failure
  printf "%b%s%b" "$color" "$symbol" "\033[0m"
) \
\[\033[0;33m\]\w\[\033[0m\]$(
  branch=$(git rev-parse --abbrev-ref HEAD 2>/dev/null)
  [ -n "$branch" ] && printf " [\033[0;35m%s\033[0m]" "$branch"
) \
\n\[\033[0;37m\]$(date +%H:%M:%S)\[\033[0m\] $ '