FSMonitor is an application to monitor changes in a directory structure and execute actions depending on the events captured. It's built upon the Mac OS X FSEvents API.
Usage:
fsmonitor [dir1] [dir2] [...] --add --modify --exec /myscript
Global options:
--recursive, -r : Scan directories recursively
--verbose, -v : Be verbose about program state
Per execution options:
--add, -a : When a file or directory is added
--modify, -m : When a file or directory is modified
--delete, -d : When a file or directory is deleted
When parsing the command line a watch flag is built using the above
actions until an --exec is encountered, which will then bind that
--exec to those actions and will reset the flag. This allows you to
bind multiple or different actions to different scripts. For example:
fsmonitor . -a -m --exec ~/tests.sh -a -d --exec ~/updatedocs.sh