20 Dec
2021
20 Dec
'21
10:50 p.m.
On Dec 20, 2021, at 3:54 PM, Mark J. Blair <nf6x at
nf6x.net> wrote:
The recent thread "Disallow system from dz lines (OpenVMS/VAX 7.3)" started me
wondering how to entirely disable the login prompts on a given serial line, such as to use
the port for some other purpose like controlling external hardware. I've been trying
to find out how to do that in the manuals, but I haven't found it yet. It seems like
it might be something to do with SET TERM, but I don't see obvious flags for that. Can
anybody offer any hints? I won't be too surprised if my eyes have already glided over
the answer in the manuals and HELP SET TERM text.
I don't know the VMS answer but I can give the RSTS answer: in V9 (I think) and later,
set terminal/nointeractive" means the terminal can only be used as an application I/O
device or DECnet line, not as a login terminal. The feature was introduced to avoid
starting the login program on the line in case random characters happened to appear --
that would make the line "in use" and prevent its use by, say, a printer
spooler.
paul