title: Hex String Replacement Using sed
body: <p>I'm having some trouble getting sed to do a find/replace of some hex characters.  I want to replace all instances within a file of the following hexadecimal string:</p>
  
  <pre><code>0x0D4D5348
  </code></pre>
  
  <p>with the following hexadecimal string:</p>
  
  <pre><code>0x0D0A4D5348
  </code></pre>
  
  <p>How can I do that?</p>
  
  <p>EDIT: I'm trying to do a hex find/replace.  The input file does not have the literal value of "0x0D4D5348" in it, but it does have the ASCII representation of that in it.</p>