diff --git a/cmd/leetcode/main.go b/cmd/leetcode/main.go
new file mode 100644
index 0000000..5b90f6d
--- /dev/null
+++ b/cmd/leetcode/main.go
@@ -0,0 +1,38 @@
+// package is like namespace. Every file has one
+package main
+
+// HINT: To import just file you can the format import "<package-name">
+import (
+	"github.com/spf13/cobra"
+  "io/ioutil"
+  "log"
+  "fmt"
+)
+
+// Like in C/C++/Java there is a main function
+func main() {
+  var listExer = &cobra.Command {
+    Use: "leetcode",
+    Short: "list all exercises",
+    Long: "leetcode ls",
+    Run: func(cmd *cobra.Command, args []string) {
+      leet_code_dir := "/home/aerex/.nb/leetcode/exercises"
+      files, err := ioutil.ReadDir(leet_code_dir)
+      if err != nil {
+        log.Fatal(err)
+      }
+
+      for _, file := range files {
+        fmt.Println(file.Name())
+      }
+    },
+  }
+
+  var rootCmd = &cobra.Command{
+    Use: "leetcode <command>",
+  }
+  rootCmd.AddCommand(listExer)
+
+}
+
+
diff --git a/all-elements-in-two-binary-search-tree/nodejs/index.js b/exercises/all-elements-in-two-binary-search-tree/nodejs/index.js
similarity index 100%
rename from all-elements-in-two-binary-search-tree/nodejs/index.js
rename to exercises/all-elements-in-two-binary-search-tree/nodejs/index.js
diff --git a/dynamic-programming/.index b/exercises/dynamic-programming/.index
similarity index 100%
rename from dynamic-programming/.index
rename to exercises/dynamic-programming/.index
diff --git a/dynamic-programming/22-generate-parenthesis/golang/main.go b/exercises/dynamic-programming/22-generate-parenthesis/golang/main.go
similarity index 100%
rename from dynamic-programming/22-generate-parenthesis/golang/main.go
rename to exercises/dynamic-programming/22-generate-parenthesis/golang/main.go
diff --git a/dynamic-programming/22-generate-parenthesis/js/index.js b/exercises/dynamic-programming/22-generate-parenthesis/js/index.js
similarity index 100%
rename from dynamic-programming/22-generate-parenthesis/js/index.js
rename to exercises/dynamic-programming/22-generate-parenthesis/js/index.js
diff --git a/dynamic-programming/22-generate-parenthesis/python/index.py b/exercises/dynamic-programming/22-generate-parenthesis/python/index.py
similarity index 100%
rename from dynamic-programming/22-generate-parenthesis/python/index.py
rename to exercises/dynamic-programming/22-generate-parenthesis/python/index.py
diff --git a/dynamic-programming/5-longest-palindromic-substring/golang/main.go b/exercises/dynamic-programming/5-longest-palindromic-substring/golang/main.go
similarity index 100%
rename from dynamic-programming/5-longest-palindromic-substring/golang/main.go
rename to exercises/dynamic-programming/5-longest-palindromic-substring/golang/main.go
diff --git a/group-anagrams/nodejs/index.js b/exercises/group-anagrams/nodejs/index.js
similarity index 100%
rename from group-anagrams/nodejs/index.js
rename to exercises/group-anagrams/nodejs/index.js
diff --git a/integer-to-roman/nodejs/index.js b/exercises/integer-to-roman/nodejs/index.js
similarity index 100%
rename from integer-to-roman/nodejs/index.js
rename to exercises/integer-to-roman/nodejs/index.js
diff --git a/permutations/nodejs/index.js b/exercises/permutations/nodejs/index.js
similarity index 100%
rename from permutations/nodejs/index.js
rename to exercises/permutations/nodejs/index.js
diff --git a/pow-x-n/nodejs/index.js b/exercises/pow-x-n/nodejs/index.js
similarity index 100%
rename from pow-x-n/nodejs/index.js
rename to exercises/pow-x-n/nodejs/index.js
diff --git a/rec-permute/nodejs/index.js b/exercises/rec-permute/nodejs/index.js
similarity index 100%
rename from rec-permute/nodejs/index.js
rename to exercises/rec-permute/nodejs/index.js
diff --git a/reverse-integer/nodejs/index.js b/exercises/reverse-integer/nodejs/index.js
similarity index 100%
rename from reverse-integer/nodejs/index.js
rename to exercises/reverse-integer/nodejs/index.js
diff --git a/roman-to-integer/nodejs/index.js b/exercises/roman-to-integer/nodejs/index.js
similarity index 100%
rename from roman-to-integer/nodejs/index.js
rename to exercises/roman-to-integer/nodejs/index.js
diff --git a/string-to-integer-aoi/nodejs/index.js b/exercises/string-to-integer-aoi/nodejs/index.js
similarity index 100%
rename from string-to-integer-aoi/nodejs/index.js
rename to exercises/string-to-integer-aoi/nodejs/index.js
diff --git a/util/js/index.js b/exercises/util/js/index.js
similarity index 100%
rename from util/js/index.js
rename to exercises/util/js/index.js
diff --git a/zig-zag-conversion/nodejs/index.js b/exercises/zig-zag-conversion/nodejs/index.js
similarity index 100%
rename from zig-zag-conversion/nodejs/index.js
rename to exercises/zig-zag-conversion/nodejs/index.js