show_files.c

此源码是著名的教材BeginningLinux Programming中文名字叫Linux程序设计书中的源代码

#include <sys/types.h>
#include <dirent.h>
#include <unistd.h>
#include <stdio.h>

int my_readir(const char * path)
{
	DIR		* dir;
	struct dirent	* ptr;

	if ((dir = opendir(path)) == NULL) {
		perror("opendir");
		return -1;
	}
	while ((ptr = readdir(dir))!=NULL) {
		printf("file name: %s\n",ptr->d_name);
	}
	closedir(dir);

	return 0;
}

int main(int argc, char ** argv)
{
	if (argc < 2) {
		printf("listfile <target path>\n");
		exit(1);
	}
	
	if (my_readir(argv[1]) < 0) {
		exit(1);
	}

	return 0;
}