Jenkins script to find all jobs with a file in the workspace containing a string

jenkins-file-jobs-with-file-in-workspace-containing-string.groovy

def allJobs = hudson.model.Hudson.getInstance().allItems.findAll { it instanceof hudson.model.AbstractProject }

allJobs.findAll{ 
    it.someWorkspace?.list().find{ f ->   		
        ( !f.isDirectory() && f.name.endsWith('.gradle') && f.readToString().contains('some string') )
    } 
}.each { 
    println "${it.name}\t${it.absoluteUrl}"
}