在 Powershell 中检查范围 [英] Checking for a range in Powershell

问题描述

我正在尝试编写一个脚本，该脚本将获取计算机的 IP 地址并检查它是否属于特定的 IP 范围.例如，如果机器的 IP 是 192.168.0.5，脚本将检查它是否在 192.168.0.10 到 192.168.0.20 之间.到目前为止，我的脚本只能获取远程机器的 IP，但我无法弄清楚如何检查 IP 是否在特定范围内.我很感激任何建议.谢谢.

I'm trying to write a script that will get an IP address of a computer and check to see whether it falls in a specific range of IPs. So for example, if the IP of the machine is 192.168.0.5, the script will check to see if it falls between the range 192.168.0.10 to 192.168.0.20. So far, my script is only able to get IPs of remote machines, but I just can't figure out how I would check if the IP is in a specific range. I'd appreciate any suggestions. Thank you.

推荐答案

让 .NET 完成这项工作可能是最简单的 - 有一个 IPAddress 类可以将它们解析为数值以进行比较.这是一个您可以放入您的个人资料(或添加到模块，或者您更喜欢添加 PS 功能)的功能:

It might be easiest to let .NET do the work - there's an IPAddress class that can parse them to their numeric values for comparison. Here's a function that you can drop into your profile (or add to a module, or however you prefer to add PS functions):

function IsIpAddressInRange {
param(
        [string] $ipAddress,
        [string] $fromAddress,
        [string] $toAddress
    )

    $ip = [system.net.ipaddress]::Parse($ipAddress).GetAddressBytes()
    [array]::Reverse($ip)
    $ip = [system.BitConverter]::ToUInt32($ip, 0)

    $from = [system.net.ipaddress]::Parse($fromAddress).GetAddressBytes()
    [array]::Reverse($from)
    $from = [system.BitConverter]::ToUInt32($from, 0)

    $to = [system.net.ipaddress]::Parse($toAddress).GetAddressBytes()
    [array]::Reverse($to)
    $to = [system.BitConverter]::ToUInt32($to, 0)

    $from -le $ip -and $ip -le $to
}

用法如下:

PS> IsIpAddressInRange "192.168.0.5" "192.168.0.10" "192.168.0.20"
False
PS> IsIpAddressInRange "192.168.0.15" "192.168.0.10" "192.168.0.20"
True

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