Command watcher is a file watcher that executes a command when files change. It can be used to automatically run tests, build code, or any other command when files in a directory change. In Shell A: ```console $ go install github.com/tmc/watcher@latest $ mkdir /tmp/foo; cd /tmp/foo $ watcher -v echo "triggered" running echo triggered triggered ``` Now, In Shell B: ```console $ touch /tmp/foo/oi ``` Every time /tmp/foo changes the echo will be re-executed. License: ISC