Git Blame & Bisect

git blame shows who last modified each line. git bisect binary searches for bug-introducing commits.

Syntax

GIT

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git blame file.txt
git bisect start
git bisect bad
git bisect good v1.0

Git Blame and Bisect

BASH

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# Blame - see who changed each line
git blame filename.txt

# Blame with line range
git blame -L 10,20 filename.txt

# Bisect - binary search for bugs
git bisect start
git bisect bad          # current commit is bad
git bisect good v1.0    # this tag was good

# Git marks a commit, you test it
git bisect good  # or git bisect bad

# When done
git bisect reset

Try It Yourself

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