[Info-vax] %PCSIUI-E-PRIVCLASS1 when using PRODUCT with PIPE

[Jairo Alves]

> That is a DCL command procedure invocation.  That command procedure 
> specifies the input be from the TT device.  That then creates the DCL 
> equivalent of a subshell.  And the output from DCL procedure 
> invocations can be redirected.
> 

I see. It's a subshell, not a "pseudo-command file". I tried out of
curiosity to run a loop in that command, and sure enough, DCL throws an
exception, precisely because it is not emulating a command file, but
instead a sub shell, where loops are forbidden.

I> @TT:
_I> n = 0
_I> loop:
%DCL-W-NOLBLS, label ignored - use only within command procedures
 \LOOP:\
_I> wr sys$output n
0
_>  Exit



> The syntax in this area is also related to the leading $ sign in DCL 
> procedures for commands and no leading $ for data, and the DECK command.

When I teach simple DCL to my students they always complain about
the dollar sign convention. They find it kinda old-fashioned.

> 
> This area also has parallels to the SYSBOOT> SET/STARTUP=OPA0: 
> conversational environment; the OpenVMS analog to the Unix single-user 
> mode environment.  In that context, you're effectively entering the 
> commands of the startup script.

By the way, I've used a guide of Hoffman labs to "break-in" an old 
Alpha that nobody knew the password for a couple years ago. Thanks :)

As a measure of precaution, I printed that out and still have this 
guide in my desk's drawer.