#include<fcntl.h>#include<stdio.h>// this one is really simpleintmain(){intfd;charbuff[32];intlen;fd=open("simple.not.the.flag",O_RDONLY);if(-1==fd){perror("open failed");return-1;}len=read(fd,buff,sizeof(buff));if(len<0){perror("read failed");return-1;}write(1,buff,len);putchar('\n');return0;}