Simple timer in Ubuntu Unity

From time to time I like to make a tea during my play with notebook but I don’t want to constantly check clock whether time is up to pick out tea bag from the cup. I found out that there is no simple timer app in Ubuntu Unity. Thanks to Linux we have at command which can schedule any action on system and notify-send command which can display notifications on desktop. By combination of both we have very elegant and easy to use timer without necessity to install anything.

How to set timer to 10 minutes ahead?

Run terminal (Ctrl-Alt-T) and type

at now + 10 minutes

you will get into at prompt and you can schedule notification in next 10 minutes

notify-send "Pick out tea bag :)"

And now, just wait 10 minutes and you once time is up, you will see notification on your desktop.