I have a perl process running. When it starts up it writes it's PID into a file. It also has a signal trap.

When I run a file (kill.pl) with this code in it from the command line, it traps the signal: 

#!/usr/bin/perl -w
# attempt to kill a pid

use strict;

my $pid;
open (PID, "<signwriter.pid");
while(<PID>){
    $pid = $_;
}
kill 'ALRM', $pid;

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However, if I run the same code as part of a CGI process (called from a web-form), or if I try and run kill.pl from 
system "perl ./kill.pl";

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nothing seems to happen.

I don't understand :(

In reply to sending kill signals from perl CGIs by tachekent

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