title: Recursive search and replace in text files on Mac and Linux
body: <p>In the linux shell, the following command will recursively search and replace all instances of 'this' with 'that' (I don't have a Linux shell in front of me, but it should do).</p>
  
  <pre><code>find . -name "*.txt" -print | xargs sed -i 's/this/that/g'
  </code></pre>
  
  <p>What will a similar command on OSX look like?</p>