watchman

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How to watch for file changes and trigger a shell command on any modification in OS X and Linux

These days our files are everywhere, you need an advanced IDE just to track where all the code for a small software project is, and you have many background processes running as dependencies on your main application. It's not always possible to know when a particular file will be updated since it's done via a chain of automatic processes. Have you ever been waiting for a process to run and not notice that it had finished? As developers, we need ways to hook into these chains and be aware of files which change when they change in order to trigger new actions off of those "filesystem events...