bypass login in && automatically run a specified script

There is autologin for that. Davide

Well, init runs some gettys (on my system), as specified in /etc/inittab. I guess you could run a script that does something like

chown username.usergroup /dev/ttyx su - username < /dev/ttyx > /dev/ttyx

and not run the gettys.

Oh come on, you can surely find something more complicated!

Otherwise, man inittab and replace one of the getty lines:

What will chown the tty? And besides, he wants to get a shell too, I think.

Hi.

Here is a good article on setting up autologins or running apps on a specific terminal

Because this tells the kernel not to run /sbin/init but run /bin/bash instead, so rc.x scripts are not processed (nor is /etc/inittab)

See the above link or for more examples on starting other applications or listing logs on virtual terminals instead of getty:

We all have to start somewhere

Of course you are welcome!

Where chowning the tty was asked? I see no wants for a shell neither.

Well if this

isn't a shell, then yes, your way is simpler. And if exec'ing a shell is desired, then it'll act funny unless it has the correct ownership. Of course, since it's the same user on the tty every time, the chowning could be done ahead of time.

Uhh.../sbin/init is still run in runlevel 1. Different things are started (or not started) in that runlevel, but init most certainly runs. Check /etc/rc1.d (or /etc/init.d/rc1.d, depending on distro) and /etc/inittab to see what exactly is run in level 1. If you want to bypass that, too, you need to boot with the "init=/bin/sh" parameter (or similar) to your bootloader.