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How to generate git diff patch?

To understand the process involved in it, we need to first understand the terminologies that is being used in the git. Suppose you have committed your code in Git repository. Now when you select the particular commit, then you will see something like this TK-34164 e2e test cases added Commit: 96f17e85e5b76cff8a6a0332c4f22d10aca3aec6 [96f17e8] Parents: 56a575c5b8 Author: Abhishek Kumar Date: 3 January 2017 at 18:52:06 IST Labels: HEAD -> feature/TK-34164-configure-robot-framework-into Here at line  #1  is custom message for the commit, after that at line  #2  you see a commit-id which is 40 characters long hexadecimal string (SHA-1) and it's short version in square bracket which is 7 characters long.  SHA-1  (Secure Hash Algorithm 1) produces a 160-bit (20-byte) hash value known as a message digest. A SHA-1 hash value is typically rendered as a hexadecimal number, 40 digits long. This  commit-id  is 160-bit SHA-1 hash, uniquely rep...