title: How to install mono 4.8 on Ubuntu 16.04
body: <p>Ok, I feel like I should be able to figure this out based on the documentation provided by Mono, but nothing is working. Based on <a href="http://www.mono-project.com/download/#download-lin-ubuntu" rel="nofollow noreferrer">this guide</a> and <a href="http://www.mono-project.com/docs/getting-started/install/linux/" rel="nofollow noreferrer">this note</a>, I've tried running </p>
  
  <pre><code>sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
  echo "deb http://download.mono-project.com/repo/ubuntu/dists/wheezy/snapshots/4.8.0" | sudo tee /etc/apt/sources.list.d/mono-official.list
  sudo apt-get update
  </code></pre>
  
  <p>I've modifed that 2nd line a few times and or simply edited /etc/apt/sources.list.d/mono-official.list, trying other similar things, butevery time I run the sudo apt-get update, I get:</p>
  
  <pre><code>user@NAS:~$ sudo apt-get update
  E: Malformed entry 1 in list file /etc/apt/sources.list.d/mono-official.list (Component)
  E: The list of sources could not be read.
  </code></pre>
  
  <p>I need 4.8, as the app I need to use with mono does not work as well with 5.0. I currently have mono 4.2.1, but I believe it came pre-installed on my distro.</p>