Git bisect
What is git bisect
git bisect is a command that helps you find the commit that introduced a bug. It does this by using a binary search algorithm to find the commit that introduced the bug.
How to use git bisect
Start bisect
Use the following command to start bisect:
git bisect start
It brings us to the interact terminal mode. We then need to tell git which commit is the good one and which one is the bad one by typing
git bisect good <commit>
git bisect bad <commit>
Then afterward, git will use a binary search algorithm to suggest us to check if a certain commit is good or bad until it finds the commit that introduced the bug.
Finally, we can use exit the bisect mode by using git bisect reset. Then use git diff to check the difference between the the commit that introduced the bug and the one before it (does not have the bug).
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Checkout the following video to see how to use git bisect in action.