ppmtoapplevol(1) on Linux
The text c61e80e258ac, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it.
convert a PPM into an Apple volume label image
The text c61e80e258ac, as Debian 13 (Trixie), Debian 12 (Bookworm) shipped it.
convert a PPM into an Apple volume label image