cancel-all-pending.groovy

for (anItem in hudson.model.Hudson.instance.getQueue().getItems()) { 
  anItem.doCancelQueue()
}

cancel-single.groovy

target = "job-name"
for (item in hudson.model.Hudson.instance.getQueue().getItems()) {
   if (item.task.getName().equals(target)) {
       println item.doCancelQueue()
   }
}

remove-dupes.groovy

ignoreParams = new HashSet<String>()
ignoreParams.add("from_date")
ignoreParams.add("to_date")
 
seen = new HashSet<Map<String,String>>()
 
items = hudson.model.Hudson.instance.getQueue().getItems()
for (i = items.length - 1; i >= 0; i--) {
   item = items[i]
   params = item.getActions()
   for (param in params) {
      if (param instanceof ParametersAction) {
         itemMap = new HashMap<String,String>()
         for (p in param.getParameters()) {
            name = p.getName()
            if (!ignoreParams.contains(name)) {
               itemMap.put(name,p.toString())
            }
         }
         if (seen.contains(itemMap)) {
            print "DUPE: "
            println param.getParameters()
            println ""
            item.doCancelQueue()
         } else {
            seen.add(itemMap)
         }
      }
   }
}
 
println seen.size()