title: Install multiple homebrew formulas at the same time
body: <p>You can install multiple homebrew formulas by <code>brew install package1 package2</code>. But if you have a text file with all the packages that you would like to install. How would you do it?</p>
  
  <p><code>brew install &lt; packages.txt</code> doesn't work. It gives me the response: <code>This command requires a formula argument</code> </p>