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How to pass a return code from a Java app to a calling Unix shell script

West100 asked
Last Modified: 2012-08-13
What would be the best way to pass a return code from a Java app back to a calling Unix korn shell script?

I have a small basic Java app that reads a flat file, processes the file then writes good and bad output files.  In the Java app I am catching IOExceptions and logging them.  

If a file is not found I am catching that error but I also need to pass to the calling shell script a return code that indicates that the Java app finished processing with an exception.   How should I pass a negative/exception generated return code back to the shell script? Currently the return code the Unix script (if [ $rcode -ne 0 ]) is getting is 0 regardless if there is an IOException or not.

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