perl function getpgrp

The getpgrp function in Perl is used to retrieve the process group ID of the current process.

Here's an example of using getpgrp in Perl:

#!/usr/bin/perl

use strict;
use warnings;

# Get the process group ID of the current process
my $pgrp = getpgrp();

print "Process group ID: $pgrp\n";

In this example, we simply call the getpgrp function to retrieve the process group ID of the current process. This ID is then printed to the console using the print function.

When you run this script, it will print the process group ID of the current process to the console.

Note that the behavior of getpgrp may depend on the operating system and the specific process being queried. Additionally, it may be necessary to have appropriate privileges to access process group information for processes other than the current process.