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+# reg compare
+
+> Compare keys and their values in the registry.
+
+- Compare all values under a specific key with a second key:
+
+`reg compare {{first_key_name}} {{second_key_name}}`
+
+- Compare a specific value under two keys:
+
+`reg compare {{first_key_name}} {{second_key_name}} /v {{value}}`
+
+- Compare all sub keys and values for two keys:
+
+`reg compare {{first_key_name}} {{second_key_name}} /s`
+
+- Only output the matches between the specified keys:
+
+`reg compare {{first_key_name}} {{second_key_name}} /os`
+
+- Output the differences and matches between the specified keys:
+
+`reg compare {{first_key_name}} {{second_key_name}} /oa`