powershell简单语法如果条件不起作用

Question

因此，我正在尝试编写一个将DNS转发器设置为2个预设IP的脚本，但是如果用户想选择其他IP，则他只需要在提示中给予它们。

Write-Host " "
Write-Host "DNS Forwarders are set on -192.168.20.3 & 168.192.24.3- want to choose these?"
$Antw = Read-Host -Prompt 'y/n'
If ($Antw.ToLower() = "n")
{
    $ip1 = Read-Host -Prompt 'DNS Forwarder 1: '
    $ip2 = Read-Host -Prompt 'DNS Forwarder 2: '
    C:WindowsSystem32dnscmd.exe $hostname /resetforwarders $ip1, $ip2
}

        Elseif ($Antw.ToLower() = "y")
        {
            C:WindowsSystem32dnscmd.exe $hostname /resetforwarders 192.168.20.3, 168.192.24.3
        }

#Write-Host $Antw

我的if/elseif似乎不起作用，但是，如果我按" y"，它仍然要求2个IP？我的代码怎么了？

谢谢

Answer 1

这是那些对PowerShell完全不满意的人的常见错误。PowerShell中的比较不是与经典操作员符号进行的；您必须使用" fortran风格"操作员：

 Write-Host " "
 Write-Host "DNS Forwarders are set on -192.168.20.3 & 168.192.24.3- want to choose these?"
 $Antw = Read-Host -Prompt 'y/n'
 If ($Antw.ToLower() -eq "n")
 {
     $ip1 = Read-Host -Prompt 'DNS Forwarder 1: '
     $ip2 = Read-Host -Prompt 'DNS Forwarder 2: '
     C:WindowsSystem32dnscmd.exe $hostname /resetforwarders $ip1, $ip2
 }

         Elseif ($Antw.ToLower() -eq "y")
         {
             C:WindowsSystem32dnscmd.exe $hostname /resetforwarders 192.168.20.3, 168.192.24.3
         }

 #Write-Host $Antw

Answer 2

比较操作员

-eq             Equal
-ne             Not equal
-ge             Greater than or equal
-gt             Greater than
-lt             Less than
-le             Less than or equal
-like           Wildcard comparison
-notlike        Wildcard comparison
-match          Regular expression comparison
-notmatch       Regular expression comparison
-replace        Replace operator
-contains       Containment operator
-notcontains    Containment operator
-shl            Shift bits left (PowerShell 3.0)
-shr            Shift bits right – preserves sign for signed values. (PowerShell   3.0)
-in             Like –contains, but with the operands reversed.(PowerShell 3.0)
-notin          Like –notcontains, but with the operands reversed.(PowerShell 3.0)