True. If you only want one console, use NetWare. ;-) On Fri, 2002-01-04 at 16:07, Kevin O'Gorman wrote: > Nobody has mentioned it, but there's a real danger that you could wind > up unable to administer your system. This is particularly true because > the original question referred to the root user. > > Suppose something goes wrong with the on allowed root connection. What > then? You could even find yourself hitting RESET just to reclaim the > ability to administer the system. Not the best result. > > ++ kevin > > > > On Fri, Jan 04, 2002 at 11:18:34AM -0800, Net Llama wrote: > > A possibly far less complicated solution (although along the same lines) > > is to just have the shell in /etc/passwd changed to /bin/false (or > > something equally useless) each time a person logs in, and then changed > > back to /bin/bash when they log out. The only problem with this is it > > could all go badly if/when a person doesn't logout properly (like the > > SSH connection is suddenly dropped etc). > > > > --- John Hiemenz <[EMAIL PROTECTED]> wrote: > > > On Friday 04 January 2002 12:17 pm, Douglas J Hunley wrote : > > > > anyone know of any hacks/methods/etc to limit a particular userid to > > > only > > > > one login at a time? > > > > > > > > i.e. admin #1 logs in as root to do something, meanwhile admin #2 > > > sshes > > > > into machine as root to do something, but is not allowed to log in. > > > > > > > > just trying to keep people from tripping over each other ;) > > > > > > > > and skip the 'give em seperate accounts' and the 'use su' .. > > > > I'm looking for other solutions thanks > > > > > > I saw a kludge suggestion in the sco group regarding this. > > > > > > Involved adding some code the the login shell (.bashrc?) that tested > > > if user > > > was already logged in, and if so, would kick them with a message > > > telling them > > > root was already active on the system..this was written for SCO > > > OpenServer, > > > so not all may apply to linux, but anyway.. > > > > > > http://www.pcunix.com/SCOFAQ/scotec6.html#restrictlogin > > > > > > Or here it is: > > > > > > How do I restrict logins? > > > > > > For some reason, I often get requests to limit users to one login. I > > > guess > > > the people asking such questions have a reason for wanting to restrict > > > logins > > > this way. The only way to do it is to add a script to either > > > /etc/profile or > > > the particular user's .profile that tests to see if this user is > > > logged in > > > somewhere else. Something like this in /etc/profile will work: > > > > > > IAM=`who am i | cut -d" " -f1` > > > COUNT=`w | cut -d" " -f1 | grep "^$IAM$" | wc -l` > > > [ $COUNT -gt 1 ] && exit 0 > > > > > > > > > Similar tricks can restrict a user to a particular tty: > > > > > > IAM=`who am i | cut -d" " -f1` > > > TTY=`tty` > > > [ $TTY != "/dev/tty07" ] && [ $IAM = "tony" ] && exit 0 > > > > > > And then there's always restricting login to root: put this in > > > /etc/profile > > > > > > IAM=`who am i | cut -d" " -f1` > > > [ -f /etc/nologin ] && [ $IAM != "root" ] && exit 0 > > > > > > When you need to restrict logins, just "touch /etc/nologin"; remove it > > > when > > > the need is over. > > > > > > You can restrict root to a particular device by adding a line like > > > CONSOLE=/dev/tty01 > > > > > > > > > to /etc/default/login (se "man M login"). > > > > ===== > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Lonni J. Friedman [EMAIL PROTECTED] > > > > Linux Step-by-step help: http://netllama.ipfox.com > > > > . > > > > __________________________________________________ > > Do You Yahoo!? > > Send your FREE holiday greetings online! > > http://greetings.yahoo.com > > _______________________________________________ > > Linux-users mailing list > > Archives, Digests, etc at http://linux.nf/mailman/listinfo/linux-users > > -- > Kevin O'Gorman (805) 650-6274 mailto:[EMAIL PROTECTED] > Permanent e-mail forwarder: mailto:Kevin.O'[EMAIL PROTECTED] > At school: mailto:[EMAIL PROTECTED] > Web: http://www.cs.ucsb.edu/~kogorman/index.html > Web: http://kosmanor.com/~kevin/index.html > > "Life is short; eat dessert first!" > _______________________________________________ > Linux-users mailing list > Archives, Digests, etc at http://linux.nf/mailman/listinfo/linux-users
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