sleep—suspends execution for some number of seconds

sleep time

sleep suspends execution for time seconds. It is used to execute a command after a certain amount of time.

Example A.39. 
1   (sleep 105; command)&
2   (In Script)
    while true
    do
       command
       sleep 60
    done

EXPLANATION

  1. After 105 seconds, command is executed. Prompt returns immediately.

  2. Enters loop; executes command and sleeps for a minute before entering the loop again.

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