How to write groovy script for the below requirement (for JIRA server version)

[Paras Sachan]

1. Access and Print 10 properties of an issue (due date, assignee, creator, etc)
2. Print issue comments for 5 issues
3. Print issue history events for 3 issues
4. Create 2 custom fields, print values of those fields for 5 issues

5. Access issues sub-tasks
6. Print history events only for status change

[Nic Brough -Adaptavist-]

Could you explain more of what you are trying to do here?  

To do all of these things, search for the issues you want to look at, and look at them - there's nothing you need to script here.

[Paras Sachan]

Thanks for the reply.

I am trying to do all this by scripting, I know we can achieve all without any script , but if we need a script for all above then how we can do that?

These are general requirements , it can fall to any project or any issue. (General format of issue).