It's intended to be ran via SHELL.PRG — running it from BASIC will crash your computer
In order to use the program, you'll need to place the "neofetch" binary into SHELL-CMDS folder in your SD card. then you can run the program in SHELL.PRG just like any command exactly the same way as you'd do on linux.
Official GitHub page
This post doesn't provide binary downloads anymore, because those builds were extremely outdated. Compiled binaries of neofetch are distributed with the SHELL itself.
#R46