Suspends execution for an interval.
The sleep command suspends execution of a process for at least the interval specified by the Seconds parameter. The amount of time specified in the Seconds parameter can range from 1 to MAXINT (2,147,483,647) seconds.
This command returns the following exit values:
|0||The execution was successfully suspended for at least Seconds seconds, or a SIGALRM signal was received.|
|>0||An error occurred.|
( echo "SYSTEM SHUTDOWN IN 10 MINUTES!" | wall sleep 300; echo "SYSTEM SHUTDOWN IN 5 MINUTES!" | wall sleep 240; echo "SYSTEM SHUTDOWN IN 1 MINUTE!" | wall sleep 60; shutdown )&This command sequence warns all users 10 minutes, 5 minutes, and 1 minute before the system is shut down.
while true do date sleep 60 doneThis shell procedure displays the date and time once a minute. To stop it, press the Interrupt key sequence.
The shutdown command, wall command.
The alarm subroutine, pause subroutine, sigaction subroutine, sleep subroutine.
Shells Overview in AIX Version 4.3 System User's Guide: Operating System and Devices.