The only working PC I have is a 32-bit x86 and has a minimal Debian installation. I need to flash a USB with an ISO file from it to make a live system. I tried for a few days to get flathub or appimage working there, but just can’t. I decided an apt package would be the easiest course of action, but neither Rufus, Impress or BalenaEtcher seem to be available in default repos. It there a program that is there? A bare .elf executable with no packaging would also be fine.
mkusb is a simple bash script around dd to make things easier. I always have it installed on my laptop, in my ~/bin/.