title: Cannot push to github, ssh: Could not resolve hostname
body: <p>I can't get pass this, have remade the repository multiple times, made ssh keys over</p>
  
  <pre><code>--------------
  demo_app &lt;username&gt;$ git remote add origin git@github.com:&lt;username&gt;/demo_app.git
  
  fatal: remote origin already exists.
  
  $ git push -u origin master
  ---
  ssh: Could not resolve hostname git: nodename nor servname provided, or not known
  ---
  fatal: Could not read from remote repository.
  ---
  Please make sure you have the correct access rights
  ---
  and the repository exists.
  ----------
  ---------
  
  Checked ssh keys
  
  ---
  
  $ ssh -T git@github.com
  
  Hi &lt;username&gt;! You've successfully authenticated, but GitHub does not provide shell access.
  
  ---
  </code></pre>
  
  <p>Still receiving the same message.</p>