After each command issued, the RC variable is set to one of the following codes:
In the case of errors when executing a CA Spool command, its return code is set to 0, and error messages are placed on the stack as output from the command.
For example, the following IMOD issues a DF command to subsystem ESF9, determines the number of response lines, pulls the response lines, and prints them on the screen.
/* REXX */
/* Sample XPSPOOL/ISERVE GREXX exec */
Address XPSPOOL /* Set the host command env */
XPSPOOL.SUBSYS = 'ESF9' /* Set the Subsystenm name */
XPSPOOL.NJENODE = '' /* Set the NJE node name */
'DF' /* List all files */
NumRecs = Queued() /* Get the number of records*/
Do i = 1 to NumRecs /* Pull each record */
Parse Pull Record /* off of the queue */
Say Record /* and print it */
End
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