title: What's the best way to bulk update Jenkins projects?
body: <p>We have hundreds of Jenkins projects (mostly created from a few templates), often need to make the same change to all of them. e.g. today I need to add a post-build step to delete workspace at the end. Next I need to change the step to copy build result to a shared drive to Nexus repository.</p>
  
  <p>What's the best way to apply such kind of bulk change to Jenkins projects?</p>