Backup Script

[Kostas Blekos]

Robert Davison <rob_27_preston at yahoo.co.uk> on Sat, Mar 03, 2007 (09:06 +0000) wrote:
> Im trying to write a small backup script which I have put in
> /etc/periodic/weekly. The script is as follows......
>    
>   #!/bin/sh
> #
> #weekly backup of chosen files
> #
> if
> then
>         tar -cf /dev/sa0 /var/ftp /home /etc /usr/local
>         echo "backing up the disks"
> else
>         echo "There was a problem" 1>&2
>         exit 1
> fi
>   echo "Finished at `/bin/date`."
> exit
> 
>    
>   Now I have no experience at bash scripting as was wonderng if
>   someone could give me some help with the if statement. Basically im
>   trying to test to see if the machine knows that /dev/sa0 (my tape
>   drive) is accessable. If it is then it continus to the backup, if
>   not then it gives the error message and echos the date.
>    
>   Any help would be much appreciated.
> 
> 
>  		

 You can test if it is writable by:
[ -w /dev/sa0 ]
 eg:
-----------
if [ -w /dev/sa0 ]
then
	echo "Writable"
else
	echo "Not writable"
fi
-----------
"man test" for other tests.

-- 
Kostas Blekos	<http://a.physics.upatras.gr/~mplekos/>
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