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Monitor a directory for changes and run a shell command, using OS X's FSEvents API
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fswatch.c This is a small program using the Mac OS X FSEvents API to monitor a directory. When an event about any change to that directory is received, the specified shell command is executed by /bin/bash. usage: > ./fswatch /some/dir "echo changed" This would monitor /some/dir for any change, and run `echo changed` when a modification event is received. fswatch passes along the parent processes' environment, so you can do things like this: > fswatch components/ "~/local/bin/componentize.rb components/ > resources/components.js" compile: You'll need the OS X Developer Tools installed on 10.5 or higher. > make This code was adapted from the example program in the FSEvents API pdf.