[X-Unix] Backup script help

[Brian Medley]

On Wed, Feb 22, 2006 at 01:28:13PM -0600, Charles Howse wrote:

> 
> On Feb 22, 2006, at 1:08 PM, Brian Medley wrote:
> 
> >On Wed, Feb 22, 2006 at 12:21:45PM -0600, Charles Howse wrote:
> >
> >>First, I'm not satisfied with how I'm verifying that the backup
> >>volume on the remote server is mounted or not.  Can anyone help
> >>make  that section 'bullet-proof'?
> >
> >What are you not satisfied with?
> 
> Sorry I didn't make this clear initially.
> This part sometimes errors with "mount returned 0, exiting" which  
> means the volume was mounted successfully.  I added the 'not'  
> operator, but IMO, there should be a more elegant way to do this  
> entire section.

Are you sure the mount command exited with 0?  What I'm thinking
is:

> 		mount -t nfs moe:/backup /Users/charles/mnt > /dev/null 2>&1

$? is set

> 				echo `date` > $file
> 				echo >> $file

The two echo commands reset $?.  Try saving the value:

        mount -t nfs moe:/backup /Users/charles/mnt > /dev/null 2>&1
        ret=$?
        if [ "$?" -eq 0 ] ; then
            ...
        else 
			echo `date` > $file
			echo >> $file
			echo "Mount returned" "$ret" ", exiting." >> $file
            ...
        fi


> else
> 		# Volume is not mounted, mount it and continue
> 		mount -t nfs moe:/backup /Users/charles/mnt > /dev/null 2>&1
> 		if [ "$?" -eq 0 ] ; then
> 			# Mounted OK
> 			echo `date` > $file
> 			echo >> $file
> 			echo "Mounted volume successfully, continuing." >> 
> 			$file
> 			echo >> $file
> 		else	
> 			# Mount failed
> 			if [ "$?" ! -eq 0 ] ; then
> 				echo `date` > $file
> 				echo >> $file
> 				echo "Mount returned" "$?" ", exiting." >> 
> 				$file
> 				mail -s "Weekly Backup results" charles < 
> 				$file

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