title: Glob pattern matching the first part of a file name
body: <p>In a directory I have filenames like 123X1.jpg, 23X1.jpg, 23X2.jpg, 4123X1.jpg.
  I need the glob pattern to only get listed files starting with a required string.</p>
  
  <p>For example: </p>
  
  <pre><code>'23X' -&gt; 23X1.jpg, 23X2.jpg
  '123X' -&gt; 123X1.jpg
  </code></pre>
  
  <p>Last part part of the pattern is always an X. The first one is a number.</p>