title: How to remove alphabets and special characters from a string using REGEX in Windows Batch Script?
body: <p>I need to remove letters a to z , A to Z and special characters. I only need digits and decimal point. I found a lot of examples using string manipulations but I think it is better to use regular expressions. </p>
  
  <p>For example,</p>
  
  <p>numbers = <code>10.20af24</code></p>
  
  <p>numbers must be equal to <code>10.20</code> and not <code>10.20af24</code>.</p>
  
  <p>Thank you.</p>