ref: e8f5e0909f4a7c7ae2c4e85f563e6b4da88aa98f
dir: /sys/src/9/port/bootfs.proto/
$cputype bin 9660srv awk aux kbdfs bind bzfs cat dd disk fdisk kfs prep dossrv echo cwfs64x grep gunzip hoc ip ipconfig ls mkdir mount ramfs rc read rm sed seq sleep srv test unmount usb usbd xd rc lib rcmain local.rc 555 sys sys ../boot/local.rc tcp.rc 555 sys sys ../boot/tcp.rc bin fstype diskparts bootrc 555 sys sys ../boot/bootrc tmp