That's getting a little too complicated. My script is a simple one that
is run from /etc/cron.hourly/ by root as defined in /etc/crontab. This
is on a single user machine (plus root etc) and just copies the selected
data, files susceptable to corruption and more so, being open when the
power is pulled on accident. Yes I know this is not good to do but it
happens. I have the same script bu lots of crucial stuff but I want to
be able to choose just what I want so I can't accidentally overwrite a
program that i'd been coding for several hours with just the template
file I started of with.
On 13 Apr 2002 13:37:22 -0700, der.hans wrote:
> Am 13. Apr, 2002 schwätzte Bryce C. so:
>
> > Could anyone give me some help with some bash scripting. I'm trying to
> > write a script for an hourly back up but I don't know how to add a
> > timestamp in to the tar output file name. What I have currently (with
> > confidential parts hidden) is:
> >
> > #!/bin/bash
> > su _USER_ -c "cd /home/_USER_; tar -czf
> > _NFSMOUNT_/_FILENAME_._COMPUTERNAME_._DATE_.tar.gz _DIRECTORYTOBU_/"
> >
> > Anything with _TEXT_ is the ommitted text except for the _DATE_. Anyone
> > please?
>
> I toss the date in the format I want into a variable, then use that
> variable. That variable should be expanded just fine. The key is to make
> sure that it gets assigned and that it doesn't have any spaces in it.
>
> In my script below you could add the following two lines after the $DATE
> variable is assigned to make sure you're getting what you want.
>
> echo "<$DATE>"
> exit
>
> The angle-brackes act as delimiters in the output to show you exactly what
> the $DATE variable contains.
>
> If you su with a dash, then you should go to their home dir, so you don't
> need the cd. If you don't trust that you should get the home path from
> /etc/passwd.
>
> It looks like you're only backing up one dir within the home dir. If you
> want to backup the entire home dir, then you should do that from one dir up
> to get all the dotfiles. That will add an extra-level to the path that's
> backed up.
>
> You don't need to su unless you're wanting the user to be able to access the
> backup directly. That's a good idea, but you should remove their write perms
> afterwards.
>
> You might want to add the -l option to make sure you don't wander down any
> SMB mounts.
>
> You can also use the -C option to do the cd.
>
> #!/bin/bash
>
> USER=$1
> if [ $2 ] ; then
> if [ $2 = 'full' ] ; then
> FULL=yes
> fi
> fi
>
> DIR2BACKUP=something
> NFSMOUNT=something
> FILENAME=something
> HOSTNAME=`hostname`
>
> DATE=`date +%d%b%Y`
> USERSHOME=`grep ^$USER: /etc/passwd | cut -f 6 -d :`
> TARBALL=$NFSMOUNT/$FILENAME.$HOSTNAME.$DATE.tar.gz
>
> if [ $FULL = 'yes' ] ; then
> DIR2BACKUP=`basename $USERSHOME`
> su $USER -c "tar clzf $TARBALL -C $USERSHOME/.. $DIR2BACKUP/"
> else
> su $USER -c "tar clzf $TARBALL -C $USERSHOME $DIR2BACKUP/"
> fi
>
> chmod w-a $TARBALL
>
> # end
>
> Check for typos and bad code. Munge for your purposes. Translate to Swahili.
>
> ciao,
>
> der.hans
> --
> # https://www.LuftHans.com/
> # Two roads diverged in a wood, and I --
> # I took the one less traveled by,
> # And that has made all the difference. -- Robert Frost
> # I, OTOH, prefer to just go stomping through the desert... - der.hans
>
>
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