Runs commands when files are changed on git pull: for example, when package.json is changed, npm install will be ran, installing the dependency updates.

See the source for a full list—it's pretty readable. Please send a pull request if your technology or desired command is missing!

You can either run this script manually every time you pull, or you can set it up on the post-merge git hook so that it runs automatically.

As of 1.0.0, you can install this over npm.

$ npm install -g if_changed

Then to run the script:

$ if_changed

And to install itself into the post-merge hook:

$ if_changed install

To run every time, download if_changed.sh and run it.

To run automatically on the post-merge hook, move the if_changed.sh file to .git/hooks/post-merge in your repository (where post-merge is the name of the file, not a containing directory), and make it executable using chmod +x post-merge.

See this document to learn more about git hooks.

Released under the MIT license.