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I want to trigger an action, when in one of my specified directories, a new file is created. I want to use inotifywait for this purpose. But the problem is that I don't know how to use inotifywait to watch several directories simultaneously. Watching a single directory even recursively is not a problem, but several? Is it possible, or must I run several processes with "inotifywait" in parallel?

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You can just list directories you want to observe:

$ inotifywait testdir1 testdir2/ -m

Inside application, after instance of inotify is created using inotify_init() function, inotify_add_watch() can be called several times for selected paths. You can find the system limit of watching paths in /proc/sys/fs/inotify/max_user_watches (8192 by default).

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  • THX You for help
    – mackowiakp
    Commented May 15, 2014 at 19:35

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