I just installed Ubuntu 12.04 on one of 4 machines and am configuring it. When the machine is used in "production" mode it will be headless and will need to boot into single user mode automatically (and start an application). It will need partitions mounted, networking, ssh, etc. I want to test booting into single user mode now so as to get it right before installing/upgrading other machines to 12.04.
I don't know how I missed this when I searched the question but the answer was provided by Mr. Gruber: How to autologin (without entering username and password)(in text mode)
As sudo ,edit the file /etc/default/grub and change:
Save and then enter the command
GRUB is now configured to boot to text mode
As sudo edit the file /etc/init/tty1.conf an dchange the line:
Where "user-name" is the user who will be automatically logged in.
It appears to work correctly for me.
To get to a GUI envirnment enter
Mr. Gruber mentions using tty6 in
I'll work on the auto start of a script later ...