如何从powershell中的一行获取特定值

Question

我正在尝试从manage-bde -status C:命令中获取特定值，该命令返回以下内容：BitLocker 驱动器加密：配置工具版本 10.0.18362 版权所有 (C) 2013 Microsoft Corporation。 版权所有。

C 卷：[] [操作系统卷]

Size:                 237.29 GB
BitLocker Version:    None
Conversion Status:    Fully Decrypted
Percentage Encrypted: 0.0%
Encryption Method:    None
Protection Status:    Protection Off
Lock Status:          Unlocked
Identification Field: None
Key Protectors:       None Found

我正在尝试获得标有保护状态的行的末尾并返回Off

Answer 1

根据我的评论，我会改用Get-BitLockerVolume因为它返回一个更容易查询的对象：

Get-BitLockerVolume -MountPoint C: | Select-Object -ExpandProperty ProtectionStatus

Answer 2

如果我理解正确，您想检查它是否与保护状态下的关闭匹配？ 如果是这样，这是我快速完成的一段丑陋的代码，但可以为您提供您想要的：

$status = manage-bde -status C: | Select-String 'Protection'
if ($status -match 'Off'){
Write-Output $true
} else {
Write-Host $false
}

Answer 3

我使用了类似于上面帖子的内容来确定 BitLocker 是否已通过制造商的驱动器启用，该驱动器在识别字段中总是未知或没有。

# Check for OEM configuration of BitLocker

$blidfield = manage-bde -status C: | Select-String 'Identification Field'
$bloemencrypted = manage-bde -status C: | Select-String 'Conversion Status'
if ($blidfield -match 'None' -or $blidfield -match 'Unknown' -and ($bloemencrypted -match 'Fully Encrypted' -or $bloemencrypted -match 'Used Space Only Encrypted')){
    Write-Log "BitLocker appears to be configured with OEM configuration, Starting to decrypt."
    manage-bde -off C:
    exit
} else {
    Write-Log "BitLocker doesn't appear to be configured with OEM configuration"
}

请注意，“manage-bde -off C:”行将解密操作系统驱动器。