I think I may have figured out how to do things from the virtual terminals to affect the X screen.
The vt for X is 6 so we can do:
chvt 6 to switch to the virtual terminal 6
Next we need to have a little delay, so let's add sleep 4 (you can also use 2 if you think that's a bit faster)
We also need to add "export DISPLAY=:0" to set the X display.
Then to change the user, we use "sudo -u knoppix "
So to do xrandr and change the resolution: (this is pretty useful when you mess around with screen resolutions that cause a blank screen)
Hit CTRL+ALT+F4 to switch to VT 4: then type
chvt 6; sleep 4; export DISPLAY=:0; sudo -u knoppix xrandr
chvt 6; sleep 4; export DISPLAY=:0; sudo -u knoppix xrandr --output HDMI-1 --mode 800x600
To launch terminator:
chvt 6; sleep 4; export DISPLAY=:0; sudo -u knoppix terminator &
To open the main menu:
chvt 6; sleep 4; export DISPLAY=:0; sudo -u knoppix lxpanelctl menu
vintage quantum hard drive 30m
$150.00
Vintage Manhattan Data Switch And 2 Cables
$10.00
$100.00
Vintage Original Atari 800XL Home Personal Computer Console / Keyboard UNTESTED
$99.99
BlueSCSI V2 WiFi (Desktop) Modern Storage for Vintage Computers Latest Model
$53.50
BlueSCSI V2 WiFi (Narrow DB25) - Modern Storage for Vintage Computers
$51.50
Vintage Dot Matrix Printer Contin Feed Paper 8.5 x 11. Lots of 5 to 250 sheets.
$4.00
Vintage Timex Sinclair 1000 Personal Computer UNTESTED Plus 2 books.
$30.00
Vintage Analog Devices Kyb-100 Keyboard
$150.00
Epson MBM-2095-E Vintage Monochrome Monitor (Does not Turn On)
$105.26