Shell Programming and Scripting

Hi everybody,

First, I'm sorry for my bad english!

I have the following situation:

I have a Windows 2012 R2 with Cygwin installed. The Windows Server is used as a backup Server with Dell AppAssure installed. At the moment, AppAssure saves Backup Targets to a repository on his D. The repository size is about 3 TB. It's actually a 3 TB file. From this repository I create a so called "archiv" that is splitted in 2 folders.

Each folder should be copied to a LTO Tape. I want to do this job with TAR and MD with cygwin. I actually successfully could do this already:

Tape is = /dev/st0 (default)
With cd I first switch to the folder with the Folder "ApAs_Arc", which I want to write to tape.

Code:

# Export archiv to tape
# Rewind tape
mt -f /dev/st0 rewind
# Write folder to tape
tar -vcf /dev/st0 ApAs_Arc > export.log
----------------------------------------------------
# Import archiv to tape
# Rewind tape
mt -f /dev/st0 rewind
# Write folder to tape
tar -xvf /dev/st0 ApAs_Arc > import.log

So, until now everything that I wanted runs fine.

But here comes my problem. I would like to run this jobs as a script. You need to know and you'll see, I'm an absolutely newbie with that. I tried with google to find some tips, but I need more help.

I wrote two .sh Files (saved with notpad++ as .sh file).
First i start a .bat file as admin, that should run the following .sh script.

Code:

c:\cygwin64\bin\bash.exe -l C:\Technik\Skripts\BackuptoTape_ApAs_Arc_Copy.sh

With this code:

Code:

#!/bin/bash
# Write ApAs_Arc_2 to Tape
#-----------------------------------------------
# Datum Variable bestimmen
NOW=$(date)
# Startzeit in Logdatei schreiben
echo Start = $NOW >> /cygdrive/d/logs/export_ApAs_Arc_2.txt
# Band zurückspulen
mt -f /dev/st0 rewind
# Zeitpunkt des Finish wird in Log geschrieben
echo Finish = $NOW >> /cygdrive/d/logs/export_ApAs_Arc_2.txt

and after that i would run a .bat file (same procedure as above) that starts this script:

Code:

#!/bin/sh
# Write ApAs_Arc_2 to Tape
#-----------------------------------------------
# Datum Variable bestimmen
NOW=$(date)
# Startzeit in Logdatei schreiben
echo Start = $NOW > export_ApAs_Arc_2.log
# Ordner ApAs_Arc_2 in D: wird auf Tape geschrieben
tar -cvf /dev/st0 /cygdrive/d/ApAs_Arc_2
# Zeitpunkt des Finish wird in Log geschrieben
echo Finish = $NOW > export_ApAs_Arc_2.log

Well, my problem is, that it doesn't work . Yeah i know very good information. I get a cmd prompt, so I see the bat file is started. But that's all. No data is copied and no log file is written...

Sorry for my newbie question but I really would be thankful for your help.

Thanks

fibra3000

Does the tape device start? Try to run the script with the option -x set. Are you sure you want it run by sh, not bash as in the other script?

Hi RudiC,

Thanks for your answer.

You mean like that?

Code:

c:\cygwin64\bin\bash.exe -x C:\Technik\Skripts\BackuptoTape_ApAs_Arc_Copy.sh

Actually i tried just to run it as sh first, then as bash because i thought probably that's the problem... so should I run it as bash?

And your last question, no the device doesn't start like that. Only when i manually enter the command in the cygwin terminal.

What's the output when running it with -x ?

It doesn't change anything. I got the same result as before.

Hmmm - and what do you want us to work upon? My crystal bowl for example is a bit misty, today.

1. Is the .sh File basicly correct like that, also with the .bat file to start it? Or do you see any possible failures?
What could be the problem that, there is no log file written?
These are the main questions...