If you typed git diff --help in your terminal you get this

git-diff - Show changes between commits, commit and working tree, etc

This is a short blog about how to use git diff to view changes between two commits.

I started using it a lot recently to view what my teamates changed and that gives me a good understanding of how a certain parts of the system works.

the command is:

git diff <commit_hash_1> <commit_hash_2> -- path/to/file_you_want_to_view

normally, commit_hash_1 should be the old commit and commit_hash_2 should be the newer one to be able to view a logical difference of the changes. but you can switch them if you want to view the past changes.

If you want to view the changes between a certain commit and the latest commit you can change commit_hash_2 with HEAD

git diff <old_commit_hash> HEAD -- path/to/file_you_want_view

If you want to view all the changes your team mates did, for example you ran git pull and there were more then a couple of files changed, you can change the path with an * like so:

git diff <commit_hash> HEAD -- *

Also not to forget that you can run git log, to view the commits with it's respective hash, you can add --oneline to make your life easier.

git log --oneline

this is the output you get when you add --oneline

this gives you all the list of commits, you can also add -n <number> if you want to limit the number of commits displayed on your screen.