not able to read variable value which is sed into a file
 

Hello all,
I have a file test.sh in which I am reading the disk size in two systems, system1 and system2 and storing them in variables s1 and s2
then I am "sed"ing the values into the same file using commands
for system1 and for system2.
But when i try to read the value of the variables server1 and server2 I get empty strings i.e. the value is null..
why so?? I know it sounds complicated but can anyone help me?

Thanks in Advance :)

would be nice to see your test.sh before and after that sed command (to check what's happened)
also you can try to add set -xv at the beginning of your script.

code:

I think you have missed the point. The sed's will alter the files called on and add the serverN=val line. Within your script, server1 and server2 variables are never set.

grail means this script will alter the file named test.sh. Probably this script is that one, I have no idea. But in that case the running program cannot be altered, just the file (so you need to start test.sh after that modification)

From what the op has said and posted this is definatly self modifying code which you cant do with bash and is a realy old fashioned and crappy way of programming. Self modifying code may have been tolerable in the past when RAM and storage space was at a premium but not on a modern system.