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POCan any linux API or tool watch for any change in any folder below e.g. /SharedRoot or do I have to setup e.g. inotify for each folder?
 

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  1. POCan any linux API or tool watch for any change in any folder below e.g. /SharedRoot or do I have to setup e.g. inotify for each folder?
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    <p>I have a folder with ~10 000 subfolders.</p> <p>Can any linux API or tool watch for any change in any folder below e.g. /SharedRoot or do I have to setup inotify for each folder? (i.e. I loose if I want to do this for 10k+ folders). I guess yes, since I've already seen examples of this inefficient method, for instance <a href="http://twistedmatrix.com/trac/browser/trunk/twisted/internet/inotify.py?rev=28866#L345" rel="nofollow noreferrer">http://twistedmatrix.com/trac/browser/trunk/twisted/internet/inotify.py?rev=28866#L345</a></p> <p>My problem:<br> I need to keep folders time-sorted with most recently active "project" up top.</p> <p>When a file changes, each folder above that file should update its last-modified timestamp to match the file. Delays are ok. Opening a file (typically MS Excel) and closing again, its file date can jump up and then down again. For this reason I need to wait until after a file is closed, then queue the folder of that file for checking, and only a while later do I go and look for the newest file in its folder, since the filedate of the triggering file could already be back-dated to its original timestamp by Excel or similar programs. Also in case several files from same folder are used/created, it makes sense to buffer timestamping of that folders' parents to at least get a bunch of updates collapsed into one delayed update.</p> <p>I'm looking for a linux solution. I have some code that can be run on a windows server, most of the queing functionality is here: <a href="http://github.com/sesam/FolderdateFollowsFiles/blob/master/FolderdateFollowsFiles/Follower.vb" rel="nofollow noreferrer">http://github.com/sesam/FolderdateFollowsFiles/blob/master/FolderdateFollowsFiles/Follower.vb</a></p> <p>Available API:s<br> The relative of inotify on windows, ReadDirectoryChangesW, can watch a folder and its whole subtree; see bWatchSubtree on <a href="http://msdn.microsoft.com/en-us/library/aa365465(VS.85).aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/aa365465(VS.85).aspx</a></p> <p>Samba?<br> Patching samba source is a possibility, but perhaps there are already hooks available? Other possibilities, like client side (various windows versions) and spying on file activities in order to update folders recursively?</p>
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