Path: utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!hplabs!hp-sde!hpcuhb!hpcllla!hpclisp!hpclscu!shankar
From: shankar@hpclscu.HP.COM (Shankar Unni)
Newsgroups: comp.unix.wizards
Subject: Re: Preventing users to boot VS2000 to single user
Message-ID: <670030@hpclscu.HP.COM>
Date: 28 Oct 88 19:49:51 GMT
References: <354@eurtrx.UUCP>
Organization: HP NSG/ISD California Language Lab
Lines: 17

> running Ultrix. The Stations have their own system disk. I want to
> prevent the users of the stations to boot their system single user.

A simple trick is to prompt the user for a special password (from /etc/rc, 
using /dev/console for input) if booting single user. If the user cannot supply
the password, reboot the system (and call security :-)).

    if /etc/singlepass; then
       # .. OK
    else
       echo "Sorry, buzz off!"
       /etc/shutdown  # or reboot, if you're brave..
    fi

/etc/singlepass should read from /dev/console..
--
Shankar