Perl | sleep() Function

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();

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();

Output:

Thu Mar 28 06:02:26 2019
Thu Mar 28 06:02:27 2019

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