PowerShell registry search-replace script

pwsh-regedit-search-replace.ps1

Param(
  [Parameter(Mandatory = $true, Position = 0)]
  [string] $RegistryPath,
  [Parameter(Mandatory = $true, Position = 1)]
  [string] $SearchQuery,
  [Parameter(Mandatory = $true, Position = 2)]
  [string] $NewValue
)

$Registry = Get-ChildItem $RegistryPath -Recurse

foreach ($a in $Registry) {
  $a.Property | Where-Object {
    $a.GetValue($_) -Like "*$SearchQuery*"
  } | ForEach-Object {
    $CurrentValue = $a.GetValue($_)
    $ReplacedValue = $CurrentValue.Replace($SearchQuery, $NewValue)
    Write-Output "Changing value of $a\$_ from '$CurrentValue' to '$ReplacedValue'"
    Set-ItemProperty -Path Registry::$a -Name $_ -Value $ReplacedValue
  }
}

Hello. Do you have any instructions on how to use this? I want to search the entire registry for "mark" and replace it with "fred". Can you help?

$RegistryPath = "-------"
$SearchQuery = "-----"
$NewValue = "-----"
)

$Registry = Get-ChildItem $RegistryPath -Recurse

foreach ($a in $Registry) {
$a.Property | Where-Object {
$a.GetValue($) -Like "$SearchQuery"
} | ForEach-Object {
$CurrentValue = $a.GetValue($)
$ReplacedValue = $CurrentValue.Replace($SearchQuery, $NewValue)
Write-Output "Changing value of $a$_ from '$CurrentValue' to '$ReplacedValue'"
Set-ItemProperty -Path Registry::$a -Name $_ -Value $ReplacedValue
}
}

Thanks for this !
Was searching to do a replace of values c:<Dir> to d:<Dir> in my registry and this example really helped !
I should only change line 17 to
$ReplacedValue = $CurrentValue.tolower().Replace($SearchQuery.ToLower(), $NewValue)
This will ignore the casing of the search

And responding to @FrightRisk
Save the file and run it like this :
.\replacereg.ps1 "HKCU:" "C:\Pinball" "D:\Pinball"
This replaces all my c:\pinball entries to d:\pinball

Again thanks for sharing