How can i update a jenkins job using the api

Question

I have to create/update a jenkins job using its api because all of my jobs are using parameters which are also used by other scripts and I am trying to centralize the script

Answer 1

http://asheepapart.blogspot.ca/2014/03/use-jenkins-rest-api-to-update-job.html

That little bit of scripting looks to be what you are looking for. Uses the REST API to get and set the config with some regex S&R in the middle.

Edit: Code below based on comment. It is copied directly from the blog so I take no credit for it.

# First, get the http://jenkins.example.com/job/folder-name/job/sample-job--template/configure looking like you want

read -s token
# type token from http://jenkins.example.com/user/$userName/configure

# Download the configuration XML for the template job (which will be our model template)
curl -v -u "bvanevery:$token" http://jenkins.example.com/job/folder-name/job/sample-job--template/config.xml > generic-config.xml

# My modules
declare modules=('module1' 'module2' 'module3')

# POST the updated configuration XML to Jenkins
for m in ${modules[@]}; do
   echo "module $m";
   sed "s/MODULE/$m/g" generic-config.xml > $m-config.xml; 
   curl -v -X POST --data-binary @$m-config.xml -u "bvanevery:$token" \
        -H 'Content-Type: application/xml' \
        "http://jenkins.example.com/job/folder-name/job/$m/config.xml" ;
done