title: xxd not doing anything on alpine linux
body: <p>I'm trying to use <code>xxd</code> to follow a tutorial but it's not printing anything from the Alpine Linux container that I'm trying to run it in.</p>
  
  <p>I am running: <code>xxd -ps -c 1000 &lt;valid-file-path&gt;</code>. When I do this, it just prints out the usage instructions:</p>
  
  <pre><code>~ # xxd -ps -c 1000 $FILE_PATH
  BusyBox v1.31.1 () multi-call binary.
  
  Usage: xxd [OPTIONS] [FILE]
  
  Hex dump FILE (or stdin)
  
      -g N        Bytes per group
      -c N        Bytes per line
      -p      Show only hex bytes, assumes -c30
      -l LENGTH   Show only first LENGTH bytes
      -s OFFSET   Skip OFFSET bytes
  </code></pre>
  
  <p>I seem to be calling it correctly according to the printed usage instructions. What am I doing wrong?</p>