>Any suggestion about how to create DISPUSR as a pure system command?
>
>No subsystems, no other forms.

Commands, whether entered on a console or through MGCRE from a program
are broadcasted on the subsystem interface (SSI). Everyone interested in
commands can watch and pick commands there. Commands need to be marked
when picked from the SSI. After broadcasting an MVS routine gets to 
view the command. If the command is marked the MVS routine assumes it
has been accepted and will not do any further processing. If it is 
not marked, the MVS routine will try to route the command to one of the
MVS-known command processing routines (I never went into this part, 
so I can't give you any details here). If none of the MVS-known
command routines accepts the command, it will be rejected with IEE305I.

There may be other ways I'm not aware of but I guess your only chance 
is a subsystem routine listening on the SSI command broadcast function.



Peter Hunkeler
Senior IT Specialist, IBM zSeries Technical Sales Support, Switzerland

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