Or perhaps more safely 
$SIG{TERM} = sub {
  print "my bad\n";
  exit 0;
};

kill TERM, $$;

__output__

my bad

[download]
As (at least on my linux system) 9 corresponds to the KILL signal which you can't trap.
HTH

_________
broquaint

In reply to Re: A funny way to demo $$ by broquaint
in thread Perl Telnet weirdness by cosmicsoup

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