Jenkins – How does one disable a ‘schedule build’ button for a job in Jenkins

You can execute a Groovy script as a pre build step. I have done this a couple of times at my company. You have to install the Groovy plugin. Then you can add a pre build step "Execute system groovy script" and there you can execute something like that:

Jenkins.instance.getItem("jobname").disable()

For enabling of jobs after the build add a post build step and execute

Jenkins.instance.getItem("jobname").enable()

If you want a job, that only enables or disables other build jobs, then you don't choose pre or post build steps, but a normal build step with a system Groovy script.

You can do many more thinks with Groovy scripts. It is worth to read more about it.

Add a "System Groovy Script" pre-build step to job B that checks for (newer) queued jobs of the same name, and bails out if found:

def name = build.properties.environment.JOB_NAME
def queue = jenkins.model.Jenkins.getInstance().getQueue().getItems()
if (queue.any{ it.task.getName() == name }) {
  println "Newer " + name + " job(s) in queue, aborting"
  build.doStop()
} else {
  println "No newer " + name + " job(s) in queue, proceeding"
}