#include<unistd.h>
#include<fcntl.h>
#include<stdio.h>
#include<string.h>

int main(){
	int fd = open("/proc/testfile", O_WRONLY);
	char *word = "gorilla";
	ssize_t writelen = write(fd, word, strlen(word));
	printf("After writing %ld bytes, word =  %s\n", writelen, word);
	close(fd);
	return 0;
}