Find Magento core hacks in Git

corehacks_in_git.sh

#/bin/bash

# This one liner starts looking in the current Git repo from the second commit
# and ends at HEAD, while looking for files changed in Git that are in the app/code/core dir

# Assumes that the first commit was the initial commit of the Magento core
# And assumes that there is no further Magento upgrade committed between the second commit and HEAD
# (otherwise all updated core files will still end up in the output)

git diff --name-only $(git log --pretty=format:%H:%B | cut -d: -f1 | grep -v '^$' | tail -2 | head -1) HEAD | grep "app/code/core"