We help IT Professionals succeed at work.
Get Started

How do I execute and capture the return value of a C executable from a UNIX Kshell Script?

490 Views
Last Modified: 2013-12-26
I am trying to run a C executable from within a Korn Shell Unix script.  The C executable is to create a csv file and returns 0, 1, or -1 depending on success, warning, or failure.  I am able to execute the code successfully from Kshell because the csv file is created. But I am unable to capture the return code (0,1,or -1) in a Kshell variable for testing purposes.  Below is a code snippet I am using now that successfully runs and executes the C code but does not capture the return code.  Parameters passed to the C code (named " cexecutable" for purposes of discussion) are a variable $harness and output directory "/home/user/me/outdir/":


   output=`/home/user/me/cexecutable $harness /home/user/me/outdir/ `
    echo "OUTPUT is = " $output >> $outfile
    if [ $output -eq 0 ]; then
        echo $output " - CSV success!" >> $outfile............
and so on...
$output does not seem to capture the return code...not sure if I have a syntax error or it is a C issue.

Thanks for the help in advance!
Comment
Watch Question
CERTIFIED EXPERT
Top Expert 2007
Commented:
This problem has been solved!
Unlock 1 Answer and 13 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE