How to use 'git diff' on specific commit

Sometimes we might need to create 'diff' file for specific commit(s) and forward it to reviewers.

I also sometimes don't understand why they let me do it because they can but I understand there are a lot of patches for them to review.

Anyway, this is very simple to achieve it.

We just need to know commit-id on each patch.

We can use 'git log' for that.

For example, git shows patches like below when we type 'git log'.

$ git log

+++

commit commit-id1

Author Someone

Date Someday

Blur...blur..

commit commit-id2

Author Someone

Date Someday

Blur...blur..

...

+++

If we want to know diffs on commit-id1, we can do like below.

$ git diff commit-id1 commit-id2

In some cases, we can extract diffs to a file like below.

$ git diff commit-id1 commit-id2 > diff.txt

Hope this helps you.