post-merge

#/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com

# git hook to run a command after `git pull` if a specified file was changed
# Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.

changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"

check_run() {
	echo "$changed_files" | grep --quiet "$1" && eval "$2"
}

# Example usage
# In this example it's used to run `npm install` if package.json changed and `bower install` if `bower.json` changed.
check_run npm-shrinkwrap.json "npm install"
check_run package.json "npm install"
check_run bower.json "bower install"

Run the following command to download, chmod and copy script to .git/hooks directory:

curl -O https://gist.githubusercontent.com/aaronroberson/0d78b3cb47b5fb1848c1/raw/ff316b514ae0e7cc0933fc35f2f4b8b45855c166/post-merge && chmod +x post-merge && mv post-merge .git/hooks/