Issue
I have a pi that is connected to my TV via hdmi. It's setup to automatically login at boot to the console (not x-windows). In order to control the screen's output on my TV, I must use the keyboard connected to my pi.
I want to be able to login to the pi via ssh and then hijack the tty1 stdin stream, but still allow the stdout to be the hdmi interface. How can I do this?
I looked at 'screen' but it looks like it takes over both stdin and stdout without the ability to choose just stdin.
root@nana ~ # uname -a
Linux nana 3.4.104+ #1 SMP PREEMPT Thu Jan 8 15:40:40 CET 2015 armv7l GNU/Linux
Solution
The easiest thing to do here is open up another shell and have it's output redirected into your tty1 stdout stream.
script is an excellent program for capturing output of a program to a file. For example, you could do:
script -t0 /dev/tty1 bash
The -t parameter makes script flush its buffer to /dev/tty1 on every character press, rather than every newline.
Note that this isn't going to be controlling the tty1 shell. Rather, it is simply shoving output from a new shell into it.
If you wanted to have a single, persistent shell shared between tty1 and ssh, you could use screen/tmux. On your tty1, open up a session (either manually or on login). Then you can simply ssh in and attach to it. Both tty1 and ssh will have control over the exact same session, simultaneously.
Answered By - user1902824 Answer Checked By - Dawn Plyler (WPSolving Volunteer)