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
LSI 9305-16i SATA SAS 12Gbs RAID Controller PCIe 3.0 x8 IT-Mode 4* 8643 SATA
$229.99
IBM LSI SAS9220-8i M1015 46M0861 SAS/SATA PCI-e RAID Controller Both brackets
$139.00
XDHXT DELL PERC H710P 6Gbps 1GB PCI RAID CONTROLLER 0XDHXT
$59.00
HPE 869102-001 Smart Array E208i-a SR Gen10 Storage Controller RAID SP: 871039
$116.99
Inspur LSI 9300-8i Raid Card 12Gbps HBA HDD Controller High Profile IT MODE
$15.98
LSI MegaRAID 9361-8i 12Gb PCIe 8-Port SAS/SATA RAID 1Gb w/BBU/CacheVault/License
$39.95
Dell PowerEdge RAID Controller HBA330 12Gbs PCIe 3.0 SAS SATA J7TNV Low Profile
$29.00
LSI MegaRaid 9361-8i 12Gbps SAS / SATA Raid Controller PCIe x8 3.0 Tested
$29.00
4 Bay RAID External Hard Drive Enclosure for 2.5/3.5" SATA HDD/SSD
$79.99
ORICO Multi Bay RAID Hard Drive Enclosure USB 3.0/ Type-C For 2.5/3.5'' HDD SSDs
$135.99