title: Deleting text between two strings using sed
body: <p>I am trying to delete all of the text between two strings in a number of txt files, including the strings themselves.</p>
  
  <p>The strings are <code>SUBJECT:</code> and <code>BODY:</code></p>
  
  <p>This is what I have been using:</p>
  
  <pre><code>sed '/SUBJECT:/,/BODY:/d' *.txt
  </code></pre>
  
  <p>It appears to run without issue, but there are no changes to the files upon completion.</p>