~/.ssh2/identification
      ----------------------
      IdKey id_dsa_1024_a

##</code><code>##

      ~/.ssh2/authorization
      ----------------------
      Key id_dsa_1024_a.pub

##</code><code>##

#!/usr/bin/perl
#
# ssh-addauth - Adds automatic login to a remote SSH server
#               from the current machine.

use strict;

use Sys::Hostname;

my ($default_key)  = "id_dsa_1024_a.pub";

# These parameters may come from: /etc/ssh2/ssh2_config
my ($ssh_dir)      = ".ssh2";           # UserConfigDirectory
my ($ssh_authfile) = "authorization";   # AuthorizationFile
my ($hostname)     = hostname();
my ($username)     = getpwuid($<);

foreach my $arg (@ARGV)
{
        AddAuth($arg);
}

sub AddAuth
{
        my ($remote_host) = @_;

        system ("scp $ENV{HOME}/$ssh_dir/$default_key $remote_host:$ssh_dir/${username}_${hostname}_dsa_1024.pub");
        system ("ssh $remote_host \"echo 'Key ${username}_${hostname}_dsa_1024.pub' >> $ssh_dir/$ssh_authfile\"");
}