Add a script to find duplicates

find-duplicates.py

@@ -0,0 +1,18 @@
+import os
+from collections import defaultdict
+
+
+file_name_by_link = defaultdict(list)
+
+for file_name in sorted(os.listdir("_data/signed")):
+    with open(f"_data/signed/{file_name}") as f:
+        contents = f.read().replace("\r", "")
+    link = next(line for line in contents.split("\n") if line.startswith("link:"))[5:].strip()
+    if link == "/#":
+        continue
+    file_name_by_link[link].append(file_name)
+
+for link, file_names in file_name_by_link.items():
+    if len(file_names) == 1:
+        continue
+    print(link, "duplicates:", file_names)