What does an exitcode of null from a script imply?
Read the Javadocs on the getExitCode() of the ProcessExecutionResults
class to see when exit code will be null:
http://git.fedorahosted.org/git/?p=rhq/rhq.git;a=blob;f=modules/core/nati...
/**
* If the process finished, this is its exit code. Its numeric
value has specific meaning that is custom to the
* operating system and the program that was executed.
*
* <p>This will be <code>null</code> if the process was never
waited on or if the wait time expired before the
* process exited.</p>
*
* @return process exit code or <code>null</code> if it could not
be determined
*
* @see SystemInfo#executeProcess(ProcessExecution)
*/
public Integer getExitCode() {
return exitCode;
}