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Forum Discussion
Hardlinks in dropbox folder
Now that Dropbox has stopped supporting symlinks within Dropbox folder (to folders outside Dropbox), my setup no longer works. I wonder if hard links from within Dropbox to folders outside Dropbox wo...
Hi mtozsu,
You are welcome.
Just to note: In "very system dependent" I don't mean OS! First of all to be able you must have corresponding permissions. Regular user don't have. Next, as I already noted, hard link and soft link are very different things. Soft link is on top level of your entire file system structure, so can point to, almost, everywhere and there are no too much additional requirements. Hard link is, in fact, change in the FS, so corresponding support have to be! In this context such a "link"s could "point" to FS entries inside particular partition, link from inside don't know anything about other places (drives/partitions and so on). Typically any abstraction layer above the native FS make hard linking imposible. And many other details could have some effect, so very important is the entire setup details. Generally hard linking is not best solution. You can try directory binding or 'opposite sym link' (actual directory inside, pointer outside). :wink:
Hope this helps.
Hi mtozsu,
If you can create hard link to a folder, could be expected that it will work. BUT, typically you can't! This is very system dependent and usually disabled. :disappointed_relieved:
Hope this cast some light.
Noted, thank you.
I should have checked whether I could create a hardlink first -- it turns out I cannot on a Mac.
Hi mtozsu,
You are welcome.
Just to note: In "very system dependent" I don't mean OS! First of all to be able you must have corresponding permissions. Regular user don't have. Next, as I already noted, hard link and soft link are very different things. Soft link is on top level of your entire file system structure, so can point to, almost, everywhere and there are no too much additional requirements. Hard link is, in fact, change in the FS, so corresponding support have to be! In this context such a "link"s could "point" to FS entries inside particular partition, link from inside don't know anything about other places (drives/partitions and so on). Typically any abstraction layer above the native FS make hard linking imposible. And many other details could have some effect, so very important is the entire setup details. Generally hard linking is not best solution. You can try directory binding or 'opposite sym link' (actual directory inside, pointer outside). :wink:
Hope this helps.
You can just for files by going to "terminal".
then enter on the command line:
ln <existing file> <link to be created>.
This wil create a hard link between the 2 entries.
You can see this by executing:
ls -l <existing file> <link to be created>
You'll see that the number of link (the first number) > 1, and the inode number is the same.
It is in MacOS not possible to create a hard link on directories (as far as I know).
And, how Dropbox handles the hard linked files I don't know. I would expect is doen not recognise the inode number and/or the number of links be the same, so it would create 2 different files, with exactly the same creation/change dates (as these are in the inode admin)
