Learn to install Oracle Java JDK in Ubuntu without a PPA, and set it up entirely with environment variables and PATH variables set....
Learn how to update a field with the difference between two dates in Jira, using a Groovy script on your workflow transitions....
Develop a script to automatically close issues in a certain status in Jira so that your reports remain accurate....
Investigate user actions using the access logs provided by Jira....
Fix the "java.lang.IllegalArgumentException: Custom field with id 'customfield_id' does not exist" issue with this guide....