#!/bin/bash
HOST=$1
ssh root@$HOST 'bash -s' <<'ENDSSH'
  # commands to run on remote host
  echo Installing httpd
  yum install -y httpd
  echo Yum exited with status $?
ENDSSH

##</code><code>##

#!/usr/bin/perl
use v5.14;
use Net::SSH::Perl;

my ($host, $user, $pass) = @ARGV;

my $ssh = Net::SSH::Perl->new($host);
$ssh->login($user, $pass);
my($stdout, $stderr, $exit) = $ssh->cmd('ls -ltr');

say $stdout;