Selectively disable login at specified line?

[MFHorn]

>From article <659 at mtxinu.UUCP>, by ed at mtxinu.UUCP (Ed Gould):
>>We want to restrict login-access at a specified terminal line
>>to a group of designated users, with the other ttys still
>>accessible to all users.
>>Our machine is a VAX 11/750 running Ultrix 1.0.
> 
> The /etc/ttys file specifies the program to be run to capture the
> login name: typically /etc/getty.  You can use any program of your
> own design instead, however.

A simpler solution would be to add a group, foo, containing the
users who will be using this line, and 'chmod 660 /dev/tty?? ;
chgrp foo /dev/tty??'.

It's very possible that Ultrix will do funny things to the permission
on the tty after the user logs out, in which case you could run a two
line program of your own on that line that does a chmod/chgrp and then
exec's getty.  We're not running 1.0 here, so I can't check.

Andy Rosen           | arosen at hawk.ulowell.edu | "I got this guitar and I
ULowell, Box #3031   | ulowell!arosen          |  learned how to make it
Lowell, Ma 01854     |                         |  talk" -Thunder Road
                   RD in '88 - The way it should be