Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/cmd/auth/wrkey.c
#include <u.h> #include <libc.h> #include <authsrv.h> void main(void) { Nvrsafe safe; if(readnvram(&safe, NVwrite) < 0) sysfatal("error writing nvram: %r"); exits(0); }