#!/usr/bin/perl
# to login to work machine, rewrite /$home/etc/hosts entry
use strict;
use warnings;
use Net::SSH qw(sshopen2);

my $ppp0 = `/sbin/ifconfig ppp0`;
die "Invalid output from ifconfig! Received: $ppp0\n"
  unless ($ppp0 =~ m/(\d+\.\d+\.\d+\.\d+)/);
  my $ip = $1;
	
my $user = "jrak";
my $host = "mail.myhost.org";
my $cmd  = "perl -pi -e 's/^\\d+\\.\\d+\\.\\d+\\.\\d+\thome/$ip\thome/'
/home/jrak/etc/hosts";

sshopen2( "$user\@$host", *READER, *WRITER, "$cmd" ) or die "ssh: $!";

while (<READER>) {
    print $_;
}

close(READER);
close(WRITER);