title: Multiple versions of go
body: <p>I am trying to learn go-lng following the official docs here:
  <a href="https://golang.org/doc/install" rel="noreferrer">https://golang.org/doc/install</a></p>
  
  <p>I am stuck on the step installing extra go versions. Apparently this line should install a different version of go and make the executable available in my $PATH but it's not happening:</p>
  
  <pre><code>go get golang.org/dl/go1.10.7
  </code></pre>
  
  <p>Instead what I see is:</p>
  
  <pre><code>c.craig$ go get golang.org/dl/go1.10.7
  c.craig$ go1.10.7 download
  -bash: go1.10.7: command not found
  </code></pre>
  
  <p>Where am I going wrong? I've tried it with a space assuming this was just a typo in the docs but even that doesn't work:</p>
  
  <pre><code>c.craig$ go get golang.org/dl/go1.10.7
  c.craig$ go 1.10.7 download
  go 1.10.7: unknown command
  </code></pre>