Well, no lightweight trivial way. 
use POSIX ();
$SIG{USR1} = sub { ... };
unless(fork) {
    sleep(4);
    kill(POSIX::SIGUSR1(), getppid());
    exit;
}

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In reply to Re^3: Alarm and Telnet issues by Anonymous Monk
in thread Alarm and Telnet issues by pubscout

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