Jenkins command to get number of builds in queue
See Jenkins' Remote access API.
Access the API description with:
http://<Your Jenkins>/api/
and the actual data with:
http://<Your Jenkins>/api/xml
The Build queue has its own separate API:
http://<Your Jenkins>/queue/api/
with its data:
http://<Your Jenkins>/queue/api/xml
That's easy to do with Jenkins Script Console:
println Hudson.instance.queue.items.length// => 2
Also that's possible to execute groovy script remotely. For example, from command line:
$ curl -u username:password -d "script=println Hudson.instance.queue.items.length" jenkins_url/scriptText2
Note: user with specified username should have access to Jenkins Script Console.
Here is a shell script implementation of the mentioned Jenkins REST API
_queuesize=$(curl -s -k -m 60 http://${yourjenkinsserver}:8180/jenkins/queue/api/xml 2>/dev/null | grep -c '<item>')if [[ -z "${_queuesize}" ]]; then _queuesize=0;fi