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Forum Discussion
Stephen B.25
2 years agoCollaborator | Level 9
linux inotify on file in Dropbox: no notification of update
I want to send a message between two of my Dropbox devices which are otherwise invisible to each other. I am trying to do this by updating content of a file. $echo test > ~/Dropbox/compound ...
- 2 years ago
Ah that's it. inotify watches the file's handle not the name. So if Dropbox creates a new file then inotify loses its reference.
So I have created a dedicated message subdirectory in Dropbox and put the watch on that *directory*. Now I am notified of changes to 'the file'
Thanks very much for your help.
Здравко
2 years agoLegendary | Level 20
Stephen B.25 wrote:...
I am trying to do this by updating content of a file.
$echo test > ~/Dropbox/compound
I have a put inotifywait on ~/Dropbox/compound and do not receive notification that the file has been updated. ...
Hi Stephen B.25,
For sure there are better and more secure ways to achieve the same, in spite it's still interesting idea. In all cases when you change particular file inotifywait should react. I just checked it out and it's working. One thing you can think about is the word "updating"! 🤔 Do you actually actualize your file? Take in mind if particular file is uploaded more than single time with the same content, only first time (the actual change) is considered update. All rest uploads are just ignored! Are you repeating the same command again and again without changing "test" inside? 🧐 If so, that's your issue! 😁 You don't really update your file and that's why no any reaction can be expected. 😉 Fix it.
One more thing you should take in mind, on update event, Dropbox application doesn't update the file, but replace it in fact. This can push in confusion some monitoring systems in some cases (the same when some editor replace particular file instead of update it, Dropbox removes associated link, if any). Dropbox behaves like such replacing programs! This can affect your code in some special cases only.
Hope this helps.
- Stephen B.252 years agoCollaborator | Level 9
Ah that's it. inotify watches the file's handle not the name. So if Dropbox creates a new file then inotify loses its reference.
So I have created a dedicated message subdirectory in Dropbox and put the watch on that *directory*. Now I am notified of changes to 'the file'
Thanks very much for your help.
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