p5.6.c

linux编程源代码,其中是由大量的实例

#include <stdio.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/stat.h>
#include <fcntl.h>

int main(int argc,char* argv[]){
	int fd1;

	if(argc!=2){
		printf("Usage: %s filename\n");
		return 1;
	}

	if((fd1=open(argv[1],O_CREAT | O_RDWR,0777))==-1){
		perror("Cannot create the file");
		return 1;
	}
	
	close(STDOUT_FILENO);

	if(dup(fd1)==-1){
		perror("Cannot reserved the std out fd");
		return 1;
	}

	printf("Write the the file\n");

	close(fd1);
	return 0;
}