Powershell：文件内的条件更改值

Question

我正在编写一个 PS 脚本，该脚本对主机名是文件中的一行的每台机器执行以下操作

1. 停止服务
2. 检查 .ini 文件中的端口号
3. 根据现有值有条件地更新端口号
4. 启动服务

我很难理解第 3 步的语法： 如果“ServerPort=443”，将其更改为“ServerPort=444” ElseIf 'ServerPort=444'，将其更改为 'ServerPort=443'

这是我目前所处的位置：

$servers = Get-Content 'C:\Servers.txt'

   foreach ($server in $servers){
   # stop service and wait.
   (get-service -ComputerName $server -Name SERVICENAME).stop

   # Logic to see string. Looking for "ServerPort=%". Detect if Server port is 444 or 443. If one, set to other

   # Get Port from config file
   $port = get-content C:\config.ini | Where-Object {$_ -like 'ServerPort=*'}
    # Conditionally update port

    IF ($port -eq "ServerPort=443")
    {
        # update to 444
    }
    ELSEIF ($port -eq "ServerPort=444")
    {
        # update to 443
    }
    ELSE
    {
        Write-Host "Value not detected within Param"
    }

    #start service
    (get-service -ComputerName $server -Name SERVICENAME).start
}

根据我在这里所做的，我认为语法必须重新打开文件，重新搜索该行然后更新它......通过网络时效率很低......也许有一个更合乎逻辑和简单的方法来解决这个问题？

非常感谢您的帮助！

-韦斯

Answer 1

我重写了你的一些脚本。看看这个：

# Define the name of the service to stop/start
$ServiceName = 'wuauserv';
# Get a list of server names from a text file
$ServerList = Get-Content -Path 'C:\Servers.txt';

foreach ($Server in $ServerList){
    # Stop service and wait
    Get-Service -ComputerName $Server -Name $ServiceName | Stop-Service;

    # Logic to see string. Looking for "ServerPort=%". Detect if Server port is 444 or 443. If one, set to other

    # Read the config.ini file into $ConfigFile variable
    $ConfigFilePath = "\\$Server\c$\config.ini";
    $ConfigFile = Get-Content -Path $ConfigFilePath -Raw;

    if ($ConfigFile -match 'ServerPort=443')
    {
        # Change ServerPort to 444
        Set-Content -Path $ConfigFilePath -Value ($ConfigFile -replace 'ServerPort=443', 'ServerPort=444');
    }
    elseif ($ConfigFile -match 'ServerPort=444') {
        # Change ServerPort to 443
        Set-Content -Path $ConfigFilePath -Value ($ConfigFile -replace 'ServerPort=444', 'ServerPort=443');
    }
    else {
        Write-Host -Object ('Could not find matching ServerPort value in {0}' -f $ConfigFilePath);
    }

    Get-Service -ComputerName $server -Name $ServiceName | Start-Service;
}