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i have external hdd and i want two different backup policies:

  • Identical backup of one folder to ext hdd, but only changed/create files will be writen every day
  • Full backup another folder every day, but delete files like ./*/bin*, ./*/obj* in backups older than 1 week

Which backup software can you recommend to me?

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closed as off topic by slhck, Ivo Flipse Jul 16 '12 at 14:45

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2 Answers

up vote 2 down vote accepted

An interesting tool I've recently discovered is rdiff-backup.

rdiff-backup backs up one directory to another, possibly over a
network. The target directory ends up a copy of the source
directory, but extra reverse diffs are stored in a special
subdirectory of that target directory, so you can still recover
files lost some time ago. The idea is to combine the best
features of a mirror and an incremental backup. rdiff-backup also
preserves subdirectories, hard links, dev files, permissions,
uid/gid ownership, modification times, extended attributes, acls,
and resource forks. Also, rdiff-backup can operate in a bandwidth
efficient manner over a pipe, like rsync. Thus you can use
rdiff-backup and ssh to securely back a hard drive up to a remote
location, and only the differences will be transmitted. Finally,
rdiff-backup is easy to use and settings have sensical defaults.
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This sounds good too –  Miro Sep 13 '10 at 15:21
    
The good thing is that it stores all the incremental versions, just like Subversion does for the code. –  cYrus Sep 13 '10 at 15:36
    
I can't make choice between rdiff-backup and rsync –  Miro Sep 13 '10 at 15:43
    
Is rdiff-backup supporting identical backup/copy/change/delete every day? –  Miro Sep 13 '10 at 15:44
    
As far as I know (I use it from yesterday...) every rdiff-backup invocation updates the identical copy and adds a new diff to the list so you can also ask the version of the backup files of (say) three days ago. I find it very useful. I suggest you to take a look at the man for all the options. Here's some examples (rdiff-backup.nongnu.org/examples.html). –  cYrus Sep 13 '10 at 15:56
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None other than the fabulous rsync :)

Excluding filetypes from the backup is as simple as using 1 switch:

rsync -avz --exclude="*.obj" /home/john/critical john@superuser.com:/blah
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and can you explain some example of doing things like i've posted –  Miro Sep 13 '10 at 15:05
    
Example and man page has been provided –  John T Sep 13 '10 at 15:08
    
OK, you've answered the question, provide example isn't in question :). I'll ask for complete configuration in another question. –  Miro Sep 13 '10 at 15:13
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