title: find files that have number in file name greater than
body: <p>If I have 10 files called 01-a.txt, 02-a.txt,...10-a.txt - how can I find the files where the number is greater than 5? I would like a general solution, and I would be putting the contents of all files into one file using something like</p>
  
  <pre><code>cat *.txt &gt; bigfile.txt
  </code></pre>
  
  <p>I can get files with numbers using</p>
  
  <pre><code>ls *[0-9]*
  </code></pre>
  
  <p>but can't seem go beyond that.</p>
  
  <p>thanks.</p>