diff --git a/replace_string.py b/replace_string.py
new file mode 100644
index 0000000..e45d9f4
--- /dev/null
+++ b/replace_string.py
@@ -0,0 +1,68 @@
+import os
+import argparse
+
+def replace_content(path, old_string, new_string, preview, verbose):
+    with open(path, 'r', encoding='utf-8') as f:
+        content = f.read()
+
+    new_content = content.replace(old_string, new_string)
+    
+    if verbose:
+        print(f"Replacing content in: {path}")
+        
+    if not preview:
+        with open(path, 'w', encoding='utf-8') as f:
+            f.write(new_content)
+
+def process_directory(base_path, old_string, new_string, recursive, folder, files, content, preview, verbose, hidden):
+    for root, dirs, filenames in os.walk(base_path):
+        # Wenn "hidden" nicht gesetzt ist, versteckte Dateien/Ordner aus der Liste entfernen
+        if not hidden:
+            dirs[:] = [d for d in dirs if not d.startswith(".")]
+            filenames = [f for f in filenames if not f.startswith(".")]
+
+        if folder:
+            for d in dirs:
+                if old_string in d:
+                    old_path = os.path.join(root, d)
+                    new_path = os.path.join(root, d.replace(old_string, new_string))
+                    if verbose:
+                        print(f"Renaming directory from: {old_path} to: {new_path}")
+                    if not preview:
+                        os.rename(old_path, new_path)
+        
+        if files:
+            for f in filenames:
+                if old_string in f:
+                    old_path = os.path.join(root, f)
+                    new_path = os.path.join(root, f.replace(old_string, new_string))
+                    if verbose:
+                        print(f"Renaming file from: {old_path} to: {new_path}")
+                    if not preview:
+                        os.rename(old_path, new_path)
+                    
+        if content:
+            for f in filenames:
+                replace_content(os.path.join(root, f), old_string, new_string, preview, verbose)
+
+        if not recursive:
+            break
+
+def main():
+    parser = argparse.ArgumentParser(description="Replace strings in directories and files.")
+    parser.add_argument('path', help="Path in which replacements should be made.")
+    parser.add_argument('old_string', help="The string to be replaced.")
+    parser.add_argument('new_string', nargs='?', default="", help="The string to replace with. Default is empty string.")
+    parser.add_argument('--recursive', action='store_true', help="Replace in all subdirectories and files.")
+    parser.add_argument('--folder', action='store_true', help="Replace in folder names.")
+    parser.add_argument('--files', action='store_true', help="Replace in file names.")
+    parser.add_argument('--content', action='store_true', help="Replace inside file contents.")
+    parser.add_argument('--preview', action='store_true', help="Preview changes without replacing.")
+    parser.add_argument('--verbose', action='store_true', help="Verbose mode.")
+    parser.add_argument('--hidden', action='store_true', help="Apply to hidden files and folders.")
+    args = parser.parse_args()
+
+    process_directory(args.path, args.old_string, args.new_string, args.recursive, args.folder, args.files, args.content, args.preview, args.verbose, args.hidden)
+
+if __name__ == "__main__":
+    main()