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Perl Programming/Keywords/sleep

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The sleep keyword

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sleep makes the process sleep for the number of seconds passed by the EXPRESSION seconds (integer).

It's not a good idea to mix alarm and sleep calls, as sleep is often implemented using alarm.

Syntax

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  sleep EXPRESSION

Examples

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The code
print "Hello " . time . "\n";
sleep 5;
print "World! " . time . "\n";
returns the two strings with a leap of about 5 s:
Hello 1424262965
World! 1424262970

See also

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Previous: sin Keywords Next: socket