4 ms·

You can do sleep 15m; beep

• duaneb 10y ago
  One of the reasons to use this is to avoid beep, which may not even be enabled on your machine.
  • tingol 10y ago
    Use echo '\a' that's what this program uses anyway... It's literally sleep $1; echo '\a' or you can use at if you want exact time.
    • michaelcampbell 10y ago
      Yes, anything can be done in a different way.
    • swiley 10y ago
      X11 bell almost never works for me.