diff --git a/src/main.cpp b/src/main.cpp
index 01879be..2a29f18 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -211,6 +211,55 @@ void compte_tour() {
 /// FONCTIONS SD CARD ///
 /////////////////////////
 
+void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
+    Serial.printf("Listing directory: %s\n", dirname);
+
+    File root = fs.open(dirname);
+    if(!root){
+        Serial.println("Failed to open directory");
+        return;
+    }
+    if(!root.isDirectory()){
+        Serial.println("Not a directory");
+        return;
+    }
+
+    File file = root.openNextFile();
+    while(file){
+        if(file.isDirectory()){
+            Serial.print("  DIR : ");
+            Serial.println(file.name());
+            if(levels){
+                listDir(fs, file.name(), levels -1);
+            }
+        } else {
+            Serial.print("  FILE: ");
+            Serial.print(file.name());
+            Serial.print("  SIZE: ");
+            Serial.println(file.size());
+        }
+        file = root.openNextFile();
+    }
+}
+
+void createDir(fs::FS &fs, const char * path){
+    Serial.printf("Creating Dir: %s\n", path);
+    if(fs.mkdir(path)){
+        Serial.println("Dir created");
+    } else {
+        Serial.println("mkdir failed");
+    }
+}
+
+void removeDir(fs::FS &fs, const char * path){
+    Serial.printf("Removing Dir: %s\n", path);
+    if(fs.rmdir(path)){
+        Serial.println("Dir removed");
+    } else {noreply@dutchorange.org
+        Serial.println("rmdir failed");
+    }
+}
+
 void readFile(fs::FS &fs, const char * path){
     Serial.printf("Reading file: %s\n", path);
 
@@ -260,6 +309,15 @@ void appendFile(fs::FS &fs, const char * path, const char * message){
     file.close();
 }
 
+void renameFile(fs::FS &fs, const char * path1, const char * path2){
+    Serial.printf("Renaming file %s to %s\n", path1, path2);
+    if (fs.rename(path1, path2)) {
+        Serial.println("File renamed");
+    } else {
+        Serial.println("Rename failed");
+    }
+}
+
 void deleteFile(fs::FS &fs, const char * path){
     Serial.printf("Deleting file: %s\n", path);
     if(fs.remove(path)){