bash command error view. fork from : http://qiita.com/takayuki206/items/f4d0dbb45e5ee2ee698e

display_error_code.sh

# this file added ~/.bashrc
# fork from http://qiita.com/takayuki206/items/f4d0dbb45e5ee2ee698e
function __show_exit_code() {
  local status=$(echo ${PIPESTATUS[@]})
  local SETCOLOR_FAILURE="echo -en \\033[1;31m"
  local SETCOLOR_NORMAL="echo -en \\033[0;39m"

  for s in ${status}
  do
    if [ ${s} -ne 0 ]; then
      ${SETCOLOR_FAILURE}
      echo -e "[\xe2\x9a\xa0\xef\xb8\x8f  -> ${status// /|}]"
      ${SETCOLOR_NORMAL}
    fi
  done
}
PROMPT_COMMAND='__show_exit_code;'${PROMPT_COMMAND//__show_exit_code;/}