reg-compare
Compare keys and their values in the registry. tldr-pages
On Windows
Windows
Compare all values under a specific key with another key
reg compare key_name1 key_name2IdentifyCompare a specific value under two keys
reg compare key_name1 key_name2 /v valueIdentify/vSpecifies the value name to compare under the subkey. Windows commands referenceCompare all subkeys and values for two keys
reg compare key_name1 key_name2 /sIdentify/sCompares all subkeys and entries recursively. Windows commands referenceOnly output the matches (same) between the specified keys
reg compare key_name1 key_name2 /osIdentify/osSpecifies that only matches are displayed. Windows commands referenceoutput the differences and matches (all) between the specified keys
reg compare key_name1 key_name2 /oaIdentify/oaSpecifies that all differences and matches are displayed. Windows commands referenceCompare two keys, outputting nothing
reg compare key_name1 key_name2 /onIdentify/onSpecifies that nothing is displayed. Windows commands reference