Date: Sat, 24 Apr 1999 11:19:11 +1000 (EST) From: "Daniel O'Callaghan" <danny@hilink.com.au> To: Andy Angrick <angrick@netdirect.net> Cc: FreeBSD-ISP@FreeBSD.ORG Subject: Re: tar Message-ID: <Pine.BSF.4.10.9904241103500.79604-100000@enya.clari.net.au> In-Reply-To: <1.5.4.32.19990423200448.00b94170@netdirect.net>
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On Fri, 23 Apr 1999, Andy Angrick wrote:
> Sort of off topic...but....tar has been driving me a little crazy. I'm
> trying to create a cron job that backups webserver files and websites to a
> second drive in the middle of the night. I'm having a problem with the
> update feature (-u). It acts very strange.
Hi Andy,
I can't answer the tar question, as I have never used tar that way.
However, I recommend that you do something like below. It will give you a
full backup every Sunday, and incrementals every day. The incrementals
are named by the day of the week, so they overwrite the one from 7 days
ago. The full backups do not overwrite older versions.
Alternatively, use dump, with its various dump levels.
Danny
----------------
#!/bin/sh
DOW=`date +%a`
cd /
if [ $DOW = "Sun" -o x$1 = xfull ]; then
TIME=`date +%d-%b` # 24-Apr
NEWER=""
echo $TIME > /var/db/backup.date
else
TIME=$DOW
NEWER="--newer `cat /var/db/backup.date`"
fi
tar $NEWER -z -c -f /backup/dir/WWW-${TIME}.tgz /usr/local/www
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