tar for backup

[Timothy Payne]

Do you want just one file with just the changed files added?  Or do you
want a new file to be saved?  I've used Linux for years but I'm still a
newbie, I wrote a script to save 3 very important files and send them to
my ISP disk space, if we had a fire the backup tape would be useless.  I
used the system date when I name the backup file so I have a separate
copy of the files, they are encrypted also, then sent by ftp.  I spent
hours and hours on a simple script because I didn't know how to get it
to do the things I needed and had to look everything up.  If you want a
copy of the script send an email to my office: sales at tmpco.com and I
will forward it to you.

In fact I just got an email from my ISP: Hello Your disk usage on the
server is over its limit.  So now it's time to clean out my old files.

Tim...

On Fri, 2004-07-09 at 02:15, Andrea Marin wrote:
> Hi all,
> 
> I try to make a backup whit the command tar.
> I make a simple script whit this line:
> 
> tar cvzf $BACKUP_DEST_DIR/$BACKUP_FILENAME.tar.gz $BACKUP_DIRS
> 
> where the $BACKUP_DEST_DIR/$BACKUP_FILENAME and $BACKUP_DIRS are my
> variables.
> Now I would like to make a more profit backup.
> 
> My variable $BACKUP_FILENAME contain a name pippo and when i make a
> second backup whit the same name the first archive are delete for write
> the new archive.
> I want that the tar program confront the two archive and write only one
> archive whit the files that was in the first archive more the difference
> that are whit the second, and if in the second archive there aren't some
> file the tar don't delete those file from the first archive.
> 
> Thanks Andrea
>