Question

我正在尝试编写PowerShell脚本来更改I的驱动器号：其他内容。这是脚本。

$driveI = Get-WmiObject -Class win32_volume -Filter "DriveLetter='I:'"

if ($driveI.SerialNumber=""){

    write-host "I: is free..."

}   else  {

    write-host "I: is occupied"
    foreach ( $s in @("'Z:'", "'Y:'", "'X:'", "'W:'", "'V:'", "'U:'", "'T:'", "'R:'", "'Q:'", "'P:'", "'O:'", "'N:'", "'M:'", "'L:'", "'K:'", "'J:'", "'H:'", "'G:'", "'F:'", "'E:'", "'D:'", "'B:'", "'A:'"))
    {
        $testdrv = Get-WmiObject -Class win32_volume -Filter "DriveLetter=$s"

        if (!$testdrive.Exist)
        {
            $s = '"'+$s.Trim([char]0x0027)+'"'
            Set-WmiInstance -input $driveI -Arguments @{DriveLetter=$s}
            Write-Host I: has been moved to $s
            break
        }
    }
}

请允许我引导您完成脚本。 $driveI用于检索有关I：的所有信息。现在，如果我：没有序列号，则表示我：不存在。另一方面，如果我：存在，我试图找到一个免费的驱动器号。我正在使用foreach循环实现搜索。现在，当我们调用Get-WmiObject时，我们使用单引号的驱动器号。但是当我们使用Set-WmiInstance时，我们使用双引号。但是，即使我修改$s被双引号包裹，它也不起作用。简而言之，如果我使用Write-Host $s，我会输入输出，例如"E:"。当我使用Set-WmiInstance -input $driveI -Arguments @{DriveLetter="E:"}时，它有效。但是当我使用Set-WmiInstance -input $driveI -Arguments @{DriveLetter=$s}时，它无法正常工作。谁能告诉我我做错了什么？

Answer 1

当你以后要移除它们时，不要将引号放在字符串中。而是在实际需要它们的地方添加引号：

$driveLetters = 'Z:', 'Y:', 'X:', ..., 'D:', 'B:', 'A:'
foreach ( $s in $driveLetters ) {
    $testdrv = Get-WmiObject -Class Win32_Volume -Filter "DriveLetter='$s'"

    if (-not $testdrv) {
        Set-WmiInstance -input $driveI -Arguments @{DriveLetter=$s}
        Write-Host "I: has been moved to $s"
        break
    }
}

Answer 2

它有点笨拙，但这段代码有效。我会接受你的建议，摆脱Trim混乱。

$driveI = Get-WmiObject -Class win32_volume -Filter "DriveLetter='I:'"

if ($driveI -eq $null)  {

    write-host "I: is free..."

}  else    {    
    write-host "I: is occupied..."
    foreach ( $s in @("'Z:'", "'Y:'", "'X:'", "'W:'", "'V:'", "'U:'", "'T:'", "'R:'", "'Q:'", "'P:'", "'O:'", "'N:'", "'M:'", "'L:'", "'K:'", "'J:'", "'H:'", "'G:'", "'F:'", "'E:'", "'D:'", "'B:'", "'A:'"))
    {
        $testdrv = Get-WmiObject -Class win32_volume -Filter "DriveLetter=$s"

        if ($testdrv -eq $null)
        {
            $s = $s.Trim([char]0x0027)
            Set-WmiInstance -input $driveI -Arguments @{DriveLetter=$s}
            Write-Host I: has been moved to $s
            break
        }
    }
}

在Powershell中将字符串变量作为Argument传递

2 个答案: