Kaleidoscope/bin/find-device-port-linux-udev

#!/usr/bin/env perl

use warnings;
use strict;
my $vid = shift;
my $pid = shift;
my $prefix = '/dev/serial/by-id/';
my @paths= `ls $prefix`;
my %devices;

for my $path (@paths) {
    chomp($path);
    next unless -l $prefix. $path;
    my @data = `udevadm info -q property --name=${prefix}${path}`;
    for my $line (@data) {
	chomp ($line);
	my ($key,$val) = split(/=/,$line,2);
	$devices{$path}{$key} = $val;
    }
    if (($devices{$path}{'ID_VENDOR_ID'} == $vid) &&
	($devices{$path}{'ID_MODEL_ID'} == $pid) ) {

	if ($devices{$path}{'ID_MM_CANDIDATE'}) {
	    warn "Yikes. ModemManager wants to pwn your keyboard";
	}

	print $devices{$path}{DEVNAME};
	exit(0);
    }
}