Shell Programming and Scripting

Hi,
here is lpstat command with queue name. queue name is not valid but lpstat takes my local queue and shows the following results.is there any way that i can stop it after waring message and dont take local print queue. i would like to print a message that queue is not valid but when lpstat creates output like given below i cant print msg because it has valid print queue name xerox and status is READY. i have check on status.please guide me
lpstat -ppfs39p07
qstatus: (WARNING): 0781-102 Invalid printer name: pfs39p07.
Queue Dev Status Job Files User PP % Blks Cp Rnk
------- ----- --------- --- ------------------ ---------- ---- -- -----
xerox @DDCM READY
xerox xerox READY

thanks
sagii

There are no standards for lpstat behavior - mine simply reports an error. Yours seems to do interesting things, so let's investigate before we can answer your question.

Run your lpstat command from the prompt.
Next echo $?
Example

Code:

> lpstat -ppfs39p07
qstatus: (WARNING): 0781-102 Invalid printer name: pfs39p07.
Queue Dev Status Job Files User PP % Blks Cp Rnk
------- ----- --------- --- ------------------ ---------- ---- -- ----- 
xerox @DDCM READY
xerox xerox READY 
> echo $?
1

echo $? should produce a non-zero value (return code) on errors or warnings.
Is that what you see?

If that is the case, then you can use $? to have your code ignore any text output.

thank jim for giving me idea.it works

What happens if you put a space between the -p option and the printer name?

here is the output with space
lpstat -p pfs39p07
usage: lpstat [-drstW][-aDestination,...][-cClassname,...]
[-oOutRequirement,...][-pPrinter,...][-uUser,...]
[-vPrinter,...] [jobid,...]
Prints LP status information.