14

I just run a disk analyer for my ubuntu 12.04. I found there is a huge folder under this directory ~/.cache/deja-dup. All the files inside name like duplicity-full.20121019T115047Z.manifest.part / duplicity-full-signatures.20121019T115047Z.sigtar.part

But it contain more than 5G file there. Anyone have any idea what is this file regarding??

Can I delete them as they are eating up my disk storage.

Thank you.

user1343112
  • 193

1 Answers1

20

Firstly, this is not the system cache. The system cache is a cache that resides in memory and occupies physical memory that is not otherwise used by applications.

This is a .cache folder inside your home directory, so not system-wide at all. You can, if you need the space, safely delete it (make sure the application that uses it isn't running at the time). Only a misbehaving program would die if you delete stuff it's put in ~/.cache.

To answer your question though, deja-dup is a backup tool provided by Ubuntu. The cache probably helps it keep track of all the files in your backup sets. It probably saves a fair bit of time re-generating this information each time the backup process starts. Every file in your backup sets, it appears, has signatures stored in a cache.

5G does sound like a lot, though. If you don't use deja-dup, or you don't care about it losing its cache and being a lot more slow next time it starts, you could delete it.

thomasrutter
  • 36,774
  • 2
    Thank you for your information and correcting my knowledge. Thanks a lot!!! I have a clear picture now!! – user1343112 Jun 12 '13 at 02:42
  • 1
    for confirmation: https://answers.launchpad.net/deja-dup/+question/184246 – don.joey May 14 '14 at 11:23
  • 3
    I removed the 32 GiB folder (two 16 GiB folders actually, don't know why) in ~/.cache/deja-dup/ and ran the backup, which took 2 hours (normally 10 minutes) and created 10 GiB again in the same folder. – Christopher K. Aug 14 '18 at 16:06