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inotify

Erlang inotify

Prerequisite

Linux kernel >= 2.6.13

Note

If you are passing unicode paths make sure to use unicode:characters_to_binary/1 or unicode:characters_to_list/1.
Example: "말말" in shell is [47568,47568]. But we need [235,167,144,235,167,144] to pass to the NIF.

Make sure to use absolute paths filename:absname/1.

http://man7.org/linux/man-pages/man7/inotify.7.html
https://www.kernel.org/pub/linux/kernel/people/rml/inotify/headers/inotify.h

To check inotify system limits:
ls /proc/sys/fs/inotify/
cat $_/*

Usage

%Look at inotify_folder_watcher.erl to implement custom watcher.
%Default only sends message on a file changed.


inotify_folder_watcher:start_link({["/tmp", "/home/user"], self()}).
receive
    {inotify, changed, FileName} -> pass
end.