A single line that outputs:
COMPUTER-NAME OS-NAME OS-BUILD-VERS RAM CPU-SPEED CPU-BRAND VIDEO-CARD VRAM
The script has a couple little quirks,
It assumes 1 video card located in the a specific PCI slot. You'll need to adjust 'GFX0@0' if yours is located elsewhere. Use the ioreg command to find yours if it isn't working for you.
I transform the RAM to GB using 1024^3 and the VRAM to MB using 1024^2. Adjust if you want something else.