title: Error when installing PHPUnit 'unknown channel "pear.phpunit.de" in "pear.phpunit.de/PHPUnit"'
body: <p>Error when installing <code>PHPUnit</code> unknown channel <code>pear.phpunit.de</code> in <code>pear.phpunit.de/PHPUnit</code> invalid package name/package file "pear.phpunit.de/PHPUnit" on <code>Debian-4</code> OS.</p>
  
  <p>I've followed instructions as per the instructions contained at <a href="http://phpunit.de/manual/3.7/en/installation.html" rel="nofollow">http://phpunit.de/manual/3.7/en/installation.html</a> and I've tried the <code>PHAR</code> method and the <code>PEAR</code> method, but neither are working. </p>
  
  <p>Here's the server set up:</p>
  
  <pre><code>PEAR Version: 1.9.4
  
  PHP Version: 5.4.4-14+deb7u3
  
  Zend Engine Version: 2.4.0
  
  Running on: Linux lsh1001 3.9.6-hw+ #6 SMP
  </code></pre>
  
  <p>WHen I try to install using the <code>PEAR</code> method, I run:</p>
  
  <pre><code>pear config-set auto_discover 1
  </code></pre>
  
  <p>and I receive </p>
  
  <pre><code>config-set succeeded
  </code></pre>
  
  <p>However, when I run </p>
  
  <pre><code>pear install pear.phpunit.de/PHPUnit
  </code></pre>
  
  <p>and I receive:</p>
  
  <pre><code>Attempting to discover channel "pear.phpunit.de"...
  downloading channel.xml ...
  Starting to download channel.xml (804 bytes)
  ....done: 804 bytes
  Auto-discovered channel "pear.phpunit.de", alias "pear.phpunit.de", adding to registry
  unknown channel "pear.phpunit.de" in "pear.phpunit.de/PHPUnit"
  invalid package name/package file "pear.phpunit.de/PHPUnit"
  install failed
  </code></pre>
  
  <p>I'm new to using the command line prompt so I may be doing something strange. I've tried prefixing the lines of code with <strong>sudo</strong>, but I receive:</p>
  
  <pre><code>-bash: sudo: command not found
  </code></pre>
  
  <p>when I do this.</p>
  
  <p>I want to be able to run <code>PHPUnit</code> using the browser front-end rather than the command line install. I also tried the <code>PHAR</code> install method, but I'm not sure how to point to the installed <code>phpunit.phar</code> file. I can run the <code>phpunit.phar</code> file straight from the command line, but how would I refer to it in my <code>php.ini</code> file? I have left the file in my root directory and haven't moved it. </p>