Apple put to sleep over commandline?

[randolf balasus <rbalasus@gmail.com>]

Hello, I want put my apple into the suspend to ram state over the 
commandline interface. Anybody lnows how to do that?

For instance the computer is playing music and after two hours all 
applications should stop and the computer should shutdown. Til now I am 
using
# sleep 120m ; shutdown -h now

that is working fine but it is not required that the computer completely 
goes down.

thanks Randolf Balasus