ref: 75c2e4bf4c713832e7c8a4da74802add078ce8ba
dir: /sys/src/9/boot/bootfs.proto/
$objtype bin 9660srv awk auth secstore aux kbdfs wpa bind cat cfs cryptsetup dd disk edisk fdisk prep dossrv echo cwfs64x grep ip ipconfig ls mkdir mntgen mount mv ndb dnsgetip hjfs rc rm sed sleep srv test unmount nusb usbd ether disk kb xd rc lib rcmain local.rc 555 sys sys ../boot/local.rc net.rc 555 sys sys ../boot/net.rc bin fstype diskparts nusbrc 555 sys sys ../boot/nusbrc bootrc 555 sys sys ../boot/bootrc tmp lib firmware +