tools to study source code using git history [closed]

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Are there any recommended tools to study the source code of a git repository? My aim is to understand how has the code evolved with the incremental addition of new features to the code tha开发者_如何学运维t is in github.

I can click on "history" in github, but I was hoping to find some other git-related tool that would allow me to dig into the code in a bit more history-structured way.

Cheers

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Just some idea's:

Firstly clone the repo you want to study, then use something like the following:

git log --pretty=%H

This will list the hash of each commit, then you can use the hash to get the diff between the the hash and the previous commit:

git diff HASH

By putting these into a script like this:

for HASH in `git log --pretty=%H`
do
    git diff ${HASH} > ${HASH}.diff
done

You can study what change was made at each point. Using various git log -1 --pretty=FORMATSTRING HASHOFCOMMIT" you can get also sorts of information out of a commit. You can also use commands like git blame filename to see the commit and author of each line of a file.

As per Jed's comments, don't forget gitk (works on both Unix and Windows).