Jenkins-Job-cleanup.groovy

// Lets keep only last 10 builds
MAX_BUILDS = 10 
 
def jobs = Jenkins.instance.items;
println "Total Jobs" + jobs.size()

for (job in jobs) {
    println "Job: " + job.name
    try {
        if(job instanceof jenkins.branch.MultiBranchProject) {
            println "Multibranch"
                job = job.getJob("master")
            } 
            def recent = job.builds.limit(MAX_BUILDS)
            println "Recent Builds: "  + recent
            println "============================="
        
                for (build in job.builds) {
                    if (!recent.contains(build) && !build.isBuilding()) {
                        println "Cleaning up the build : " + build
                        build.delete()
                        println "Deleted successfully"
                    }
        }
    } catch(Exception ex) {
        println "Neglecting the error"
        ex.printStackTrace()
        continue
    }
}