tldr/pages/windows/reg-compare.md

reg compare

Compare keys and their values in the registry. More information: https://learn.microsoft.com/windows-server/administration/windows-commands/reg-compare.

• Compare all values under a specific key with another key:

reg compare {{key_name1}} {{key_name2}}

• Compare a specific [v]alue under two keys:

reg compare {{key_name1}} {{key_name2}} /v {{value}}

• Compare all [s]ubkeys and values for two keys:

reg compare {{key_name1}} {{key_name2}} /s

• Only [o]utput the matches ([s]ame) between the specified keys:

reg compare {{key_name1}} {{key_name2}} /os

• [o]utput the differences and matches ([a]ll) between the specified keys:

reg compare {{key_name1}} {{key_name2}} /oa

• Compare two keys, [o]utputting [n]othing:

reg compare {{key_name1}} {{key_name2}} /on