CODEWITHSUNDEEP
powershell
Hidei
Hidei

Reputation: 197

How to check the existence of registry key in HKEY_CURRENT_CONFIG

How to check the presence of registry key named "Mon12345678" under HKEY_CURRENT_CONFIG\System\CurrentControlSet\Control\VIDEO\ {CD73268F-4662-42EC-80F6-182E03DE7017}\0000 regsitry hive? We can validate till HKEY_CURRENT_CONFIG\System\CurrentControlSet\Control\VIDEO directly and then run random check under "Video" until we get the sub registry key called "Mon12345678"?

I tried the below code snippet 

Test-Path -Path "HKCC:\System\CurrentControlSet\Control\VIDEO\ *\Mon12345678" -ErrorAction SilentlyContinue

But the result shows false even though the sub registry hive is found. How to tackle the problem?

Upvotes: 1

Views: 1379

Answers (2)

mklement0
mklement0

Reputation: 439228

The HKEY_CURRENT_CONFIG registry hive is not predefined as a PowerShell drive name HKCC:, so unless you defined such a drive yourself with New-PSDrive, it won't exist.

(Get-PSDrive -psProvider Registry).Name shows you which registry-based drives are defined; by default, it is only HKLM: (HKEY_LOCAL_MACHINE) and HKCU: (HKEY_CURRENT_CONFIG).

Short of defining your own HKCC: drive, you can prefix a registry hive name with registry:: (the provider name) in order to target a hive; e.g.:

# Test the existence of a key known to exist in the HKEY_CURRENT_CONFIG registry hive,
# using provider prefix 'registry::'
PS> Test-Path -Path 'registry::HKEY_CURRENT_CONFIG\System\CurrentControlSet\Control'
True

Therefore, to test the existence of a subkey named Mon12345678 across all subkeys (*) of key HKEY_CURRENT_CONFIG\System\CurrentControlSet\Control\VIDEO, use the following:

$keyPath = 'registry::HKEY_CURRENT_CONFIG\System\CurrentControlSet\Control\VIDEO'
Test-Path -Path "$keyPath\*\Mon12345678"

If, by contrast, you want to test the existence of a value (a property of a registry key) named Mon12345678, you cannot use a single Test-Path call, because Test-Path can only operate on key paths, not paths ending in value names.

See this answer for background information.

$keyPath = 'registry::HKEY_CURRENT_CONFIG\System\CurrentControlSet\Control\VIDEO'
[bool] (Get-ItemProperty -EA ignore "$keyPath\*" 'Mon12345678')

Upvotes: 1

Weiss Willy
Weiss Willy

Reputation: 109

Did you try?

To search part of the registry, use the following syntax:

REG Query HKxx\subkey [/D|/K|/V] /F "search_pattern" /S [/E] [/C]

To search an entire registry hive, just omit the subkey:

REG Query HKxx [/D|/K|/V] /F "search_pattern" /S [/E] [/C]

Source of the solution and full post can be found here

Upvotes: 0

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