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
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
1U 10 SFF Bay Supermicro Server X10DRW-iT 2x Xeon E5-2690 V4 128GB DDR4 RAM
$399.00
VPS Windows / Linux Server - 12GB RAM, 4 Core, 1 TB HD, Unltd. bandwidth 1 Year
$280.50
POGO Linux WEBWARE 1150 Rack-Mount Server Pentium 4 2.8GHz 512MB - No Drives
$152.99
Globalscale Technologies DreamPlug AppNeta M22 Linux Server Dual GB Ethernet
$24.99
Red Hat Enterprise Linux 5 Server - New and Sealed
$32.00
Dell PowerEdge R210 II Rackmount Server Xeon E31220L 16Gb 1TB + 500GB LINUX 6.6
$129.00
6x Fedora Linux Computer Sticker Decals Desktop Laptop Server Badge Decal Vinyl
$2.99
Australia - Win/Linux Server- 2GB RAM, 1 Core,100 GB HD, Ultd Bandwidth 2 yrs
$200.36
VPS Windows / Linux Server 8GB RAM + 1TB HDD + Unlimited Bandwidth [ 1 Year ]
$280.49