title: Error when trying to kill processes -- "kill: pid: arguments must be process or job IDs"
body: <p>I'm trying to kill Sphinx on my server so that I can restart it. I tried using this command to find the PID:</p>
  
  <pre><code>ps ax | grep "searchd"
  </code></pre>
  
  <p>Which printed out this:</p>
  
  <pre><code> 1483 ?        S     00:00 /usr/local/bin/searchd --config /path/to/sphinx.conf
   1484 ?        Sl    20:51 /usr/local/bin/searchd --config /path/to/sphinx.conf
   1523 ?        S      0:00 /usr/local/bin/searchd --config /path/to/another/sphinx.conf
   1524 ?        Sl    20:35 /usr/local/bin/searchd --config /path/to/another/sphinx.conf
  14174 pts/0    S+     0:00 grep searchd
  </code></pre>
  
  <p>I'm confused why there are duplicate entries and can't figure out what the <code>S</code> or <code>Sl</code> columns mean, but I tried this:</p>
  
  <pre><code>kill pid 1483
  kill pid 1484
  </code></pre>
  
  <p>But that outputted this error:</p>
  
  <pre><code>-bash: kill: pid: arguments must be process or job IDs
  </code></pre>
  
  <p>When I list the processes again, it looks like it did kill the processes (I ran the kill command for the first two), but the error makes me wonder what I did wrong?</p>