May I know if there is any way to anonymise/mask the data in our search results by using our own custom commands, by editing our own custom script? For example, in the search results, I want to anonymise a certain interesting field by coding in my own custom script. Is it possible? Are there any guide to it? Thanks.
If you want to extend Splunk with your legacy scripts, maybe this example helps you to get started.
If you just want to anonymize your logs before sending them to some 3rd party, maybe scrub -cmd could do it for you without custom scripts?
None of these actually can hide your data that has been indexed by Splunk. These only manipulate search results. You can still dig out the original data using another search. If it is something really sensitive you should do the masking & hashing at indexing time. Not sure how/if custom code could be used in that case.