[sunnykey]

Код:

#Powershell script.
#Don't forget unlock script executing by 
#using command "Set-ExecutionPolicy RemoteSigned" or "Set-ExecutionPolicy Unrestricted"
#Save this file with ".ps1" extension
$SourceDir="D:\Program Files\Steam\userdata\"
$SourceFile="config.vdf"
$SourceTmp="config.tmp"
gci "$SourceDir\*" -Include $SourceFile -Recurse -Force | % {
    $CurDir=$_.DirectoryName
    New-Item -Path $CurDir -Name $SourceTmp -ItemType File
    Get-Content $_.FullName | % {
        $str=$_.ToString()
        if (($str | Select-String -Pattern "OverlayAppEnable") -eq $null) {
            $str | Out-File "$CurDir\$SourceTmp" -Append
        } else {
            "`t`t`t`"OverlayAppEnable`"`t`t`"0`"" | Out-File "$CurDir\$SourceTmp" -Append
        }
    }
    Remove-Item $_.FullName -Force
    Rename-Item "$CurDir\$SourceTmp" $_.FullName -Force
}