ref: e6935a3c4bfa6a2bfc318a41549fd3d1426aa6c4
dir: /sys/src/9/port/bootfs.proto/
$objtype bin 9660srv awk aux kbdfs bind cat cfs cryptsetup dd disk fdisk kfs prep dossrv echo cwfs64x grep ip ipconfig ls mkdir mntgen mount mv rc rm sed sleep srv test unmount nusb usbd disk kb xd rc lib rcmain local.rc 555 sys sys ../boot/local.rc tcp.rc 555 sys sys ../boot/tcp.rc bin fstype diskparts nusbrc 555 sys sys ../boot/nusbrc bootrc 555 sys sys ../boot/bootrc tmp