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Diff

The git diff command shows you the differences between... stuff. Differences between commits, the working tree, etc.

I frequently use it to look at the changes I haven't staged yet. For example:

# show the changes between the working tree and the index (unstaged changes)
git diff

# show the differences between the previous commit and the current state, including the last commit and uncommitted changes
git diff HEAD~1

# show the change between two commits
git diff COMMIT_HASH_1 COMMIT_HASH_2

Assignment

Diff the changes between the N and M commits. Remember, N reverted the changes from M.

Paste the full output of the diff into the textbox and submit it.