title: Searching in multiple Github repositories
body: <p>I Want to search all our codebase in our Github installation for different text strings. We have app. 90 different repositories.</p>
  
  <p><strong>Is there such a method?</strong></p>
  
  <p>I can only find search for file names, authors etc., not search for strings inside code. My task is to find every project which uses or refers to systems, classes, methods etc. that soon are obsolete. </p>
  
  <p>Alternately: <strong>Is there a method to download/clone all repositories in one action?</strong></p>
  
  <p>We use SourceTree as client software.</p>