sleep() function in Perl is an inbuilt function which is used to delay the execution of the current script for a specified number of seconds or forever if parameter is not specified. The sleep( ) function accepts seconds as a parameter and returns the same on success.
Syntax: sleep(seconds)
Returns: seconds passed to it as parameter, on success
Example 1:
#!/usr/bin/perl -w # Using localtime() function # to print the time print scalar localtime(); # calling the sleep function sleep(5); print "\n"; print scalar localtime(); |
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Output:
Thu Mar 28 06:02:21 2019 Thu Mar 28 06:02:26 2019
Example 2:
#!/usr/bin/perl -w # Using localtime() function # to print the time print scalar localtime(); # Using rand() to generate random delay sleep(rand(7)); print "\n"; print scalar localtime(); |
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Output:
Thu Mar 28 06:02:26 2019 Thu Mar 28 06:02:27 2019
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