How to clean and reset Jenkins build history

When you working with Jenkins while building your solution, definitely you have to run your project multiple times. It will result to a long Build History list that looks ugly and unnecessary for your production environment.

 If you need to clean this Build History, and reset the build number, you can run a simple script in  Jenkins Script Console. Here are the steps to do so.

1. Go to `Jenkins Script Console`
Go to your Jenkins home page > Manage Jenkins > Script Console

2. Run the script to clean and reset

Copy and paste this script to your Console Script text area and change the "copy_folder" to project name that you need to clean the history. Then click the "Run button".

def jobName = "copy_folder"
def job = Jenkins.instance.getItem(jobName)
job.getBuilds().each { it.delete() }
job.nextBuildNumber = 1
job.save()

Now check your Build History for the particular project, Wow!, it's clean now!