in reply to Re^2: Have perl to start another perl script
in thread Have perl to start another perl script

You can start the script and obtain the pid using a piped open. 

my $pid = open KID, "| /path/to/your/perl theScript.pl" or die ...
print KID $IPAddress;
close KID;

[download]

I'm not sure if there are any caveats with this on your platform.

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