Removing packages not supported by the Repository

Here's a small tip for rpm based systems (like fedora, centos etc) to remove all the obsolete packages that are not supported by the current repository.

• List all packages not supported by the repository.
  

  $ package-cleanup --orphans

  
  
  
• One can use xargs with the above command to remove them.
  

  $ package-cleanup --orphans | xargs yum remove -y