include <dirent.h>

include <stdio.h>

int main(int argc, char* argv[]) {
DIR *dp;
struct dirent *dirp;
if ( argc != 2) {
//err_quit("usage: ls directory_name");
printf("usage: ls directory_name");
}
if ((dp = opendir(argv[1])) == NULL) {
//err_sys("cant open %s", argv[1]); printf("cant open %s", argv[1]);
}
while ((dirp = readdir(dp)) != NULL)
{
printf("%s\n", dirp->d_name);
}
closedir(dp);
//exit(0);
return 0;
}

c实现ls功能，打印一个目录下的文件

原文：https://www.cnblogs.com/cyssmile/p/13675239.html