#!/usr/bin/perl
use strict;
use warnings;

use IO::Socket::INET;

eval {

    local $SIG{ALRM} = sub { die 'timeout'; };
    alarm 10;

    my $socket = IO::Socket::INET->new(
      PeerHost => $ARGV[0],
      PeerPort => 22,
      Proto    => 'tcp',
    );

    die "$!\n" unless $socket;

    $socket->print("\n");

    my $output = join '', $socket->getline();

    print $output;
};

# if eval set an error... handle it

if ($@){
    ... if $@ eq 'timeout';
    ... if $@ eq 'Connection refused';
}