Add All existing

rename_to_first4.py

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+#!/usr/bin/env python3
+"""
+rename_to_first4.py
+
+Usage:
+    python3 rename_to_first4.py <directory>
+
+Renames each file in <directory> so its name becomes the first
+four characters of the original filename (before the extension).
+Keeps the file extension and avoids overwriting existing files.
+"""
+import os
+import sys
+from pathlib import Path
+
+def main():
+    if len(sys.argv) != 2:
+        print("Usage: rename_to_first4.py <directory>")
+        sys.exit(1)
+
+    directory = Path(sys.argv[1])
+    if not directory.is_dir():
+        print(f"Error: '{directory}' is not a directory.")
+        sys.exit(1)
+
+    for f in directory.iterdir():
+        if not f.is_file():
+            continue
+
+        stem = f.stem[:4]  # first 4 letters of filename (no extension)
+        new_name = f"{stem}{f.suffix}"
+        new_path = directory / new_name
+
+        # avoid overwriting existing files
+        counter = 1
+        while new_path.exists():
+            new_name = f"{stem}_{counter}{f.suffix}"
+            new_path = directory / new_name
+            counter += 1
+
+        print(f"Renaming: {f.name} -> {new_name}")
+        f.rename(new_path)
+
+    print("✅ Done renaming all files.")
+
+if __name__ == "__main__":
+    main()