sleep

Delay for a specified time, pause for an amount of time specified by the sum of the values of the command line arguments

Syntax
      sleep [NUMBER [smhd]]...

Key:

   s  :  seconds (default)

   m  :  minutes

   h  :  hours

   d  :  days

"I think men talk to women so they can sleep with them and women sleep with men so they can talk to them" - Jay McInerney

Related:

nice - Change job scheduling priority
at(1) -
Equivalent Windows commands: SLEEP - Wait for x seconds