#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>

int main(int argc, char ** argv){
	if(argc < 2){
		printf("Usage:  %s message\n", argv[0]);
		return 1;
	}

	char buffer[1024] = "abc";
	snprintf(buffer, 1024, "echo %s >> /root/message", argv[1]);
	setuid(0);
	return system(buffer);
}