title: sudo: command not found when I ssh into server
body: <p>I am a newbie with server handling and Linux. I am trying to install composer on my server so that i can host my Laravel project onto it as mentioned in the tutorial in <a href="https://devmarketer.io/learn/deploy-laravel-5-app-lemp-stack-ubuntu-nginx/" rel="nofollow noreferrer">Ultimate Guide: Deploy Laravel 5.3 App on LEMP Stack</a>. I <strong>ssh</strong> into the server and after installation of composer when I run <code>sudo mv composer.phar /usr/local/bin/composer</code> I am getting a message in the terminal:</p>
  
  <pre><code>-bash: sudo: command not found
  </code></pre>
  
  <p>I desperately need some deliberate help</p>