title: supervisorctl will not tail a running process
body: <h3>Problem</h3>
  <p>I can't get supervisor to tail running processes properly.  I'm running version <code>3.0a8</code>.</p>
  <p>Here's my supervisord.conf file</p>
  <pre><code>[inet_http_server]
  port=9011
  
  [supervisord]
  logfile=/var/log/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)
  pidfile=/var/run/supervisord.pid ; (supervisord pidfile;default supervisord.pid)
  childlogdir=/var/log/supervisor            ; ('AUTO' child log dir, default $TEMP)
  
  ; the below section must remain in the config file for RPC
  ; (supervisorctl/web interface) to work, additional interfaces may be
  ; added by defining them in separate rpcinterface: sections
  [rpcinterface:supervisor]
  supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
  
  [supervisorctl]
  ;serverurl=unix:///var/run//supervisor.sock ; use a unix:// URL  for a unix socket
  serverurl=http://localhost:9011
  
  
  ; The [include] section can just contain the &quot;files&quot; setting.  This
  ; setting can list multiple files (separated by whitespace or
  ; newlines).  It can also contain wildcards.  The filenames are
  ; interpreted as relative to this file.  Included files *cannot*
  ; include files themselves.
  
  [include]
  files = /etc/supervisor/conf.d/*.conf
  </code></pre>
  <p>And here's the most basic supervisor config file, kept in <code>/etc/supervisord/conf.d/duder.conf</code></p>
  <pre><code>[program: duder]
  command=/bin/cat
  </code></pre>
  <p>However, this is what my terminal session with supervisor looks like</p>
  <pre><code>vagrant@lucid64:/etc/supervisor/conf.d$ sudo supervisorctl 
   duder                           RUNNING    pid 31795, uptime 0:03:32
   supervisor&gt; tail duder
   duder: ERROR (no such process name)
  </code></pre>
  <p>any ideas?</p>