ls.c


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

int main(int argc, char **argv)
{
    char *dirname;
    DIR *dir;
    struct dirent *dirent;

    if (argc > 1) {
        dirname = argv[1];
    } else {
        dirname = ".";
    }

    dir = opendir(dirname);

    while ((dirent = readdir(dir)) != NULL) {
        fprintf(stdout, "%s\n", dirent->d_name);
    }

    exit(EXIT_SUCCESS);
}