Shell Programming and Scripting

Hi Guys,
I have an issue with awk and variables. I have trawled the internet and forums but can't seem to get the exactt syntax I need.

I have tried using awk -v and all sorts of variations but I have hit a brick wall. I have spent a full day on this and am just going round in circles.

Code:

#set 2 variables below
JOBNAME=abc_def
AUTO=A12
 
#Below line creates a variable using comma as a field separator
DESC=`/bin/awk -F',' "/^$JOBNAME/" 
/apps/test/scripts/library/desc.output.$AUTO`

Content of /apps/test/scripts/library/desc.output.A12

Code:

abc_def,GHIJKLABCEQAVTCRIT AMM Clean Applogs

I am expecting $DESC variable to be the line in that file so my next variable I can print i.e.

Code:

DESC1=`echo $DESC | awk -F',' '{print $2}'` ;
TAGID=`echo $DESC1 | awk -F' ' '{print $1}'` ;

The problem is that although this works from the command line it doesn't in my ksh script. It doesn't assign anything to $DESC, presumably because it can't expand the JOBNAME and AUTO variables.

Can anyone please advise if this is just a quoting issue and if so - what syntax should work?

Thanks,
Gary