title: How to removing leading section in bash
body: <p>How can I remove parts of a string up to a certain character?</p>
  
  <p>Ex.) If I have the string <code>testFile.txt.1</code> and <code>testFile.txt.12345</code> how can I remove the <code>1</code> and <code>12345</code>?</p>
  
  <p>EDIT: I meant to remove and throw away the first part of a string up to a certain character and keep the end of it.</p>