added new lesson

TMP/Practice/01.11/onLess.c

@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <dirent.h>
+
+int main(int argc, char *argv[])
+{
+    DIR *dir;
+    struct dirent *entry;
+    if (argc > 1)
+        dir = opendir(argv[1]);
+    else
+        dir = opendir("/");
+    if (!dir)
+    {
+        perror("diropen");
+        return 1;
+    };
+    while ((entry = readdir(dir)) != NULL)
+    {
+        printf("%d - %s [%d] %d\n",
+               entry->d_ino, entry->d_name, entry->d_type,
+               entry->d_reclen);
+    };
+    closedir(dir);
+    return 0;
+}