Shell Programming and Scripting

Hi,
I guess Regular expressions are just not working. I saved the out out in a temp file and tried this for drilling down the issue :-

This works now. Thanks to curleb for pointing out the regex

Code:

egrep "Status: *([0]+)" without a "\b"

Code:

egrep "Status: *([0]+)" tempFile.txt
result=$?
if [ $result -ne 0 ]; then
   echo "Failed"
else
   echo "Succeeded"
fi

But, the other way i.e. taking using a variable instead of a file does not work.


Any idea ?

I'm to hedge and say you've only resolved an immediate concern...you might not have resolved your real concern. You never responded on the 'huge data' question, so I'm guessing you might still see the issue in another spot. In fact, your sample if..then statement appears to be a mock-up instead of a real-life condition. What is it you're trying to accomplish? Are you trying to capture SQL return codes or something...?

You're only going to see a variable work if you've piped something into it; $? is the same concept, but on the shell's level instead of the process. Whatever allows you to redirect into tempfile.txt should also allow you to simply pipe this same result into your egrep statement, and thereby get $return to match your goal.

HTH

Hi,
It is a network response over TCP/IP channel. So, if the transfer of data fails, I get some response. In that response, there are Status codes. So, to check for success, I need to grep on that status code and then show an error dialog to the user.

So, piping variables was not working. Hence, I decided to dump the response in a file and then do the egrep. That worked !