Re: How to use tar to do increamental backup
Date: Fri, 28 Nov 2003 06:50:43 +0000 (UTC)
In comp.unix.misc Steven <email@example.com> wrote:
> I am new in unix/linux. Now I need to know how to use tar to do
> increamental backup of my system. specifically I have the following
> 1. Looking at the man page, it seems to have options like -d
> (difference), -u (update: which append the updated files to archive
> file), and -g, and -G. But I am not really sure which one to use for
> increamental backup. I tried -u, but it seem to still back up the
> whole things (not changed files only).
> 2. In order not to overwrite the current archive file, do I have to
> change archive file name everytime I start to do increamental backup?
> e.g if I have a fullback called backupweend, do I have to chagne name
> to backupmon, backuptue if I do increamental backup on monday and
> tuesday? If yes, that means I have to write a script to do automatic
> 3. If I tar the root filesystem "/", will all the filesystem mounted
> to it be backup too. If I have a storage system mounted as "/share",
> then the backup will include all the contents in "/share"? Is there a
> option not to include?
> Thanks for your help,
Don't confuse backup with archiving.
Tar is a archive/exchange format. Backup is done with other tools,
dump is one of them. And dump will of course make true incremental
backuo(and restore) possible.
-- Peter Håkanson IPSec Sverige ( At Gothenburg Riverside ) Sorry about my e-mail address, but i'm trying to keep spam out, remove "icke-reklam" if you feel for mailing me. Thanx.