I'm pleased to report that the Linux version of this game works pretty well when running Knoppix from the CD.
You can use the already-compiled binary from the Slackware version of duke3d. I copied the duke3d game folder to a memory stick, then copied just the duke3d executable file into the same folder. To run the game, I open a shell in that folder and type duke3d. You can use the Midnight Commander file manager (mc) to edit the duke3d.cfg file if you need to (other text editors seem to corrupt this file).
Knoppix is great! I really like running it from the CD. I figure a read-only operating system offers the best protection against the viruses and hackers infesting the Internet. Maybe in the future all operating systems will work this way.
I am extremely grateful for Mr. Knopper's contribution to personal computing. Thanks also to the many contributors to this forum -- you've helped me a lot.
MSI H81M-P33 Desktop Motherboard Intel MicroATX Socket LGA1150 USB 3.0 W/IO
$26.99
ASRock B550M Pro SE AM4 DDR4 SATA 6Gb/s 1 PCIe 4.0 x16 Micro ATX Motherboard
$84.99
Gigabyte GA-Q170M-D3H-GSM LGA1151 DDR4 Desktop Motherboard (No I/O Plate)
$39.99
Asrock Z390 Phantom Gaming 4S/AC Wifi 8th/9th Gen Intel 1151 Motherboard Bulk
$33.50
Asus PRIME Z370-A LGA 1151 ATX DDR4 DIMM HDMI Intel Motherboard Only | White
$74.99
Asus H81M-C Intel LGA1150 DDR3 Desktop Motherboard MicroATX Socket H3
$23.99
Asus Prime H310M-A R2.0 Intel LGA 1151 DDR4 Desktop Motherboard
$54.99
ASUS H87I-PLUS, LGA 1150, Intel Motherboard w/ IO Shield
$39.00
MSI PRO B650-P WiFi AMD AM5 DDR5 WiFi 6E ProSeries Motherboard
$107.30
Asus X99-A II Foxconn LGA2011 ATX Motherboard - Motherboard Only
$109.00