As ECS and CONTROL-M are becomming more and more utilized in the Unix
environment, it is important to have standardized return codes from the
various scripts being scheduled. Most programs scheduled through ECS to
run on the UNIX systems are currently run through shell scripts. From
within the shell scripts, we have the ability to standardize the return
codes received by ECS and CONTROL-M. The following is a list of
standardized return codes which should be implemented across all shell
scripts on all UNIX machines: