I just finished following this tutorial
to set up a simple chroot jail on my Ubuntu 12.04 server, and after following all the steps and trying to log in, I get the MOTD but right after that it displays this error message, and then the connection is closed:
sudo: must be setuid root
I'm not sure what the issue is here, but if it matters, my /etc/group file did not have an admin line, so I just added this to the end of the file:
Does anyone know what I could have done wrong? I can provide more information if needed. Thanks!