how to compare workflow files between 2 instances?Is there any standard script to compare it?

how to compare workflow files between 2 instances?Is there any standard script to compare it?

Like if we have some custom process,functions.....which we migrate from one instance to another.

Now we need to check everything got migrated as it is from one one instance to another using a script.

For e.g if we have a custom process say(XXPO_APPR) which has 2 custom functions,1 notification attached to it.we need to validate it using a script?is it possible?