title: Powershell: All MAC Address as string combined
body: <p>Currently, I get with this command all my mac addresses from the PowerShell:</p>
  <pre><code>getmac /s $computer /FO TABLE /NH
  </code></pre>
  <p>It looks like this:</p>
  <pre><code>PS C:\Users\User&gt; getmac /s $computer /FO TABLE /NH
  
  F8-5E-A0-2B-C4-5B   Nicht zutreffend
  94-8D-95-41-5F-57   Medien ausgeworfen
  F8-5E-A0-2B-C4-5F   Medien ausgeworfen
  08-3A-88-5C-03-28   Medien ausgeworfen
  </code></pre>
  <p>Now, I want to combine all addresses to a string like this:</p>
  <pre><code>F8-5E-A0-2B-C4-5B / 94-8D-95-41-5F-57 / F8-5E-A0-2B-C4-5F / 08-3A-88-5C-03-28
  </code></pre>
  <p>I know that I must use <code>join</code> but I don't know how.
  Can someone help me with that?</p>