Issue

You want to locate Folders/Multibranch jobs that are empty and no longer contains any item inside.

Environment

• CloudBees Core
• CloudBees Core on modern cloud platforms - Managed Master
• CloudBees Core on modern cloud platforms - Operations Center
• CloudBees Core on traditional platforms - Client Master
• CloudBees Core on traditional platforms - Operations Center
• CloudBees Jenkins Enterprise
• CloudBees Jenkins Enterprise - Managed Master
• CloudBees Jenkins Enterprise - Operations Center
• CloudBees Jenkins Platform - Client Master
• CloudBees Jenkins Platform - Operations Center
• CloudBees Jenkins Distribution
• Jenkins LTS

Resolution

Go to Manage Jenkins > Script Console and copy/paste the following script. It will print the name of all folders and Multibranch jobs with no items inside.

import com.cloudbees.hudson.plugins.folder.Folder
import com.cloudbees.hudson.plugins.folder.AbstractFolder

Jenkins.instance.getAllItems(AbstractFolder.class).each { folder ->
  if (isEmpty(folder)) {
    println folder.fullName + " - " + folder.class
  }
};
  
return
  
def isEmpty(folder) {
  return folder?.items?.size() == 0
}