title: Filter OSM with osmosis for specific amenity
body: <p>I have downloaded the Ireland file from cloudmade for osmosis (500 MB) and placed it in the osmosis bin folder, which osmosis reads fine. I would now like to create a new file with just those places tagged with <code>Tag:amenity=fast food</code>. My directory is:</p>
  
  <pre><code>C:\Program Files (x86)\osmosis-0.41\bin&gt;
  </code></pre>
  
  <p>I'm currently following the <a href="http://wiki.openstreetmap.org/wiki/Osmosis/Detailed_Usage#--tag-filter_.28--tf.29" rel="nofollow">tag-filter guide</a> on the OSM wiki but can't get it to work. Here's what I'm trying:</p>
  
  <pre><code>     C:\Program Files (x86)\osmosis-0.41\bin&gt;osmosis --read-xml ireland.osm 
  --tf accept-nodes amenity=fast food --write-xml output.osm
  </code></pre>
  
  <p>And here's the error I get:</p>
  
  <p>org.openstreetmap.osmosois.core.Osmosis main 
  SEVERE:  Execution aborted. 
  org.openstreetmap.osmosis.core.OsmosisRuntimeException: 
  Only one default (un-named) argument can exist per task. 
  Arguments 6 and 4 have no name.....</p>
  
  <p>Can you tell me what I'm doing wrong? Thanks.</p>