create a jenkins job in the script console

job.groovy

import jenkins.model.Jenkins;
import hudson.model.FreeStyleProject;
import hudson.tasks.Shell;

job = Jenkins.instance.createProject(FreeStyleProject, 'job-name')

job.buildersList.add(new Shell('echo hello world'))

job.save()

build = job.scheduleBuild2(5, new hudson.model.Cause.UserIdCause())

build.get() # Block until the build finishes

generatedJobs = build.getAction(javaposse.jobdsl.plugin.actions.GeneratedJobsBuildAction).getItems()

# FIXME skip .scheduleBuild2() on Folder jobs
generatedJobs.each { j -> j.scheduleBuild2(5, new hudson.model.Cause.UserIdCause()) }