Add tool to compare directories recursively.

recursive_cmp.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+
+CHECK_CONTENT = False
+
+import os
+import sys
+import subprocess
+
+join = os.path.join
+
+def compare_dirs(dir1, dir2):
+    l1 = set(os.listdir(dir1))
+    l2 = set(os.listdir(dir2))
+    if l1 != l2:
+        print('“%s” and “%s” differ:' % (dir1, dir2))
+        print('\tfirst has: %s' % (l1-l2))
+        print('\tsecond has: %s' % (l2-l1))
+    for filename in (l1 & l2):
+        compare(join(dir1, filename), join(dir2, filename))
+
+def compare_files(f1, f2):
+    if CHECK_CONTENT:
+        subprocess.call(['cmp', f1, f2])
+
+def compare(dir1, dir2):
+    if os.path.isdir(dir1) and os.path.isdir(dir2):
+        return compare_dirs(dir1, dir2)
+    elif os.path.isfile(dir1) and os.path.isfile(dir2):
+        return compare_files(dir1, dir2)
+    elif not os.path.isdir(dir1) and not os.path.isfile(dir1) and \
+            not os.path.isdir(dir2) and not os.path.isfile(dir2):
+        print('Skipping “%s” and “%s”: neither file or dir.' % (dir1, dir2))
+    else:
+        print('“%s” and “%s” are not the same type (dir/file).' % (dir1, dir2))
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print('Syntax: %s dir1 dir2' % sys.argv[0])
+        exit(1)
+
+    (prog, dir1, dir2) = sys.argv
+    compare(dir1, dir2)