GZ:=	plan9.iso.bz2 plan9.flp.gz usbdisk.bz2
DL:=	https://9p.io/plan9/download/

all: ${GZ}

${GZ}:
	@ftp -S dont -4 ${DL}$@
	@sha256 $@ >> SHA256

check: ${GZ}
	@sha256 -C SHA256 $?

.PHONY: ${GZ}