PERL sleep Function:

Syntax:

sleep EXPR sleep

Definition and Usage:

Pauses the script for EXPR seconds, or forever if EXPR is not specified. Returns the number of seconds actually slept. Can be interrupted by a signal handler, but you should avoid using sleep with alarm, since many systems use alarm for the sleep implementation.

Return Value:

• Integer, number of seconds actually slept

Example:

Try out following example: You will understand the functionality of sleep.

$num = 5; while($num--) { print sleep(1); print "\n"; }