long running task terminal notification

terminal_notifier.sh

# add to .zshrc
# lets me know when a long running command finishes out of view
# usage: my_long_command;b
b () {
  local retcode=$?
  if [[ $retcode -eq 0 ]]; then
    osascript -e 'if not frontmost of application "Terminal" then' -e 'display notification "Command Succeeded" with title "Terminal" sound name "Glass"' -e 'end if'
  else
    osascript -e 'if not frontmost of application "Terminal" then' -e 'display notification "Command Failed" with title "Terminal"' -e 'end if'
    echo '\a'
  fi
}