#!/usr/bin/env perl
sub uniqueid
{
  if ($^O eq "MSWin32")
  {
    my $uid = 1;

    open (IPNUM, "ipconfig|") || die "Can't run ipconfig: $!\n";

    while (<IPNUM>)
    {
	if (/Address/)
      {
        $uid = (split (/: (\d+)\.(\d+)\.(\d+)\.(\d+)/))[4];
      }
    }

    close IPNUM;

    return $uid;
  }
  else
  {
    return getpwnam (getlogin ());
  }
}

1;