Date: Tue, 29 Sep 1998 09:57:51 +0200 From: Johann Visagie <wjv@cityip.co.za> To: phj <phj@www.transfar.com>, freebsd-questions@FreeBSD.ORG Subject: Re: How to backup data in FreeBSD? Message-ID: <19980929095751.E24711@cityip.co.za> In-Reply-To: <3610DBFD.9B76A265@www.transfar.com>; from phj on Tue, Sep 29, 1998 at 01:09:18PM %2B0000 References: <3610DBFD.9B76A265@www.transfar.com>
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On Tue, 29 Sep 1998 at 13:09 SAT, phj wrote:
>
> I have bulk of data(there are many many directories.) to backup,
> but I only want to backup the modified part.
>
> 1. How can I do that ?
> 2. Is there any tools availble ?
> 3. Can the command "tar" work for this purpose?
> 4. Is there any method to do increment backup?
Read the man page for dump(8).
Most of what you say can also be accomplished by clever usage of tar, if you
don't want to go into the complexities of dump.
For instance, to do an incremental backup, write a little script which does a
complete backup, and then touches a file (say, /usr/local/etc/lastbackup).
Then, to do an incremental backup, you can do:
find / \( -path '/tmp' -prune \) -o \
\( -path '/proc' -prune \) -o \
\( -name '*.core' -prune \) -o \
\( -name 'a.out' -prune \) -o \
\( ! -type d -newer /usr/local/etc/lastbackup -print |) \
| tar cvTf - /dev/nrst0 >/var/log/backup.incremental.log 2>&1
... or similar.
-- V
Johann Visagie | Email: wjv@CityIP.co.za | Tel: +27 21 419-7878
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