How can I abort all jobs with a certain name? - jenkins

Question

I'm attempting to set up a script to kill/abort all Jenkins jobs with a certain name in them. I've had trouble finding documentation on Jenkins classes and what's contained in them.
I know there are plugins available, but I've been directed not to use them. Otherwise, I've referred to a few semi-related questions here (How to stop an unstoppable zombie job on Jenkins without restarting the server?), (Cancel queued builds and aborting executing builds using Groovy for Jenkins), and I attempted to rework some of the code from those, however it doesn't quite result in killed jobs:
import hudson.model.*
def jobList = Jenkins.instance.queue
jobList.items.findAll { it.task.name.contains('searchTerm') }.each { jobList.kill(it.task) }
I've also tried the following:
def jobname = ""
def buildnum = 85
def job = Jenkins.instance.getItemByFullName(jobname)
for (build in job.builds) {
if (buildnum == build.getNumber().toInteger()){
if (build.isBuilding()){
build.doStop();
build.doKill();
}
}
}
Instead of hard-killing jobs, the first script does nothing, while the second throws a NullPointerException:
java.lang.NullPointerException: Cannot get property 'builds' on null object

Answer 1

I managed to get it working; my second example wasn't working because I brainfarted and the job I was testing it on had no builds. :(
def searchTerm = ""
def matchedJobs = Jenkins.instance.items.findAll { job ->
job.name.contains(searchTerm)
def desiredState = "stop"
if (desiredState.equals("stop")) {
println "Stopping all current builds ${job.name}"
for (build in job.builds) {
if (build.isBuilding()){
build.doStop();
println build.name + " successfully stopped!"
}
}
}