ref: 2b99422480d596ebc26921c87c6bb81a07949f3e
dir: /src/before.c/
#include <u.h> #include <libc.h> void main(int, char*[]) { int fd; fd = create("afile", OWRITE, 0644); write(fd, "hello\n", 6); if (fork() == 0) write(fd, "child\n", 6); else write(fd, "dad\n", 4); close(fd); exits(nil); }