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25

How do I trigger rsync on file modification?

rated 0 times [ 25] [ 0] / answers: 1 / hits: 37188 / 1 Year ago, wed, november 2, 2022, 9:58:38

I can sync folders with rsync -avz /directory /target, now I wish to do it if I changed a file in /directory so rsync should be called automatically.

I am using Virtual Box and the shared folder of Virtual Box is really slow, especially if you have a webpage which is using the shared folder as document root. With rsync i would be able to work with my local files on shared folder and sync it automatically with document root.

I hope someone has an idea how to do so,crontab would be not good, because it is executed each x minutes, so if i don't do anything, it will still call rsync but not if I modified my file.

Best regards

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lintical

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answered 1 Year ago ousear · Accepted Answer

crontab would be not good, cause it is executed each x seconds/minutes, so if i dont do anything, it will still call rsync but not if i modified my file

rsync will only sync the files that have been changed. If nothing has changed, it will exit. That's really a minimal overhead.

If you're unhappy with that you could use inotifywait:

while inotifywait -r /directory/*; do

    rsync -avz /directory /target

done

That will be more instant but it will do things every time you save.