检查Windows服务是否存在并在PowerShell中删除

我目前正在编写一个安装许多Windows服务的部署脚本。

服务名称已版本化，因此我想在安装新服务时删除先前的Windows服务版本。

如何在PowerShell中最好地做到这一点？

您可以为此使用WMI或其他工具，因为在Remove-ServicePowershell 6.0之前没有cmdlet（请参阅Remove-Service文档）

例如：

$service = Get-WmiObject -Class Win32_Service -Filter "Name='servicename'"
$service.delete()

或使用sc.exe工具：

sc.exe delete ServiceName

最后，如果您确实有权使用PowerShell 6.0：

Remove-Service -Name ServiceName

我发现运行正确的工具没有任何危害，我发现运行（来自Powershell）

sc.exe \\server delete "MyService" 

没有很多依赖关系的最可靠的方法。

如果只想检查服务是否存在：

if (Get-Service "My Service" -ErrorAction SilentlyContinue)
{
    "service exists"
}

我使用了“ -ErrorAction SilentlyContinue”解决方案，但后来遇到了一个问题，即它留下了ErrorRecord。因此，这是仅使用“ Get-Service”检查服务是否存在的另一种解决方案。

# Determines if a Service exists with a name as defined in $ServiceName.
# Returns a boolean $True or $False.
Function ServiceExists([string] $ServiceName) {
    [bool] $Return = $False
    # If you use just "Get-Service $ServiceName", it will return an error if 
    # the service didn't exist.  Trick Get-Service to return an array of 
    # Services, but only if the name exactly matches the $ServiceName.  
    # This way you can test if the array is emply.
    if ( Get-Service "$ServiceName*" -Include $ServiceName ) {
        $Return = $True
    }
    Return $Return
}

[bool] $thisServiceExists = ServiceExists "A Service Name"
$thisServiceExists 

但是ravikanth是最好的解决方案，因为如果Service不存在，则Get-WmiObject不会引发错误。所以我决定使用：

Function ServiceExists([string] $ServiceName) {
    [bool] $Return = $False
    if ( Get-WmiObject -Class Win32_Service -Filter "Name='$ServiceName'" ) {
        $Return = $True
    }
    Return $Return
}

因此，提供更完整的解决方案：

# Deletes a Service with a name as defined in $ServiceName.
# Returns a boolean $True or $False.  $True if the Service didn't exist or was 
# successfully deleted after execution.
Function DeleteService([string] $ServiceName) {
    [bool] $Return = $False
    $Service = Get-WmiObject -Class Win32_Service -Filter "Name='$ServiceName'" 
    if ( $Service ) {
        $Service.Delete()
        if ( -Not ( ServiceExists $ServiceName ) ) {
            $Return = $True
        }
    } else {
        $Return = $True
    }
    Return $Return
}

PS的较新版本具有Remove-WmiObject。小心$ service.delete（）的静默失败...

PS D:\> $s3=Get-WmiObject -Class Win32_Service -Filter "Name='TSATSvrSvc03'"

PS D:\> $s3.delete()
...
ReturnValue      : 2
...
PS D:\> $?
True
PS D:\> $LASTEXITCODE
0
PS D:\> $result=$s3.delete()

PS D:\> $result.ReturnValue
2

PS D:\> Remove-WmiObject -InputObject $s3
Remove-WmiObject : Access denied 
At line:1 char:1
+ Remove-WmiObject -InputObject $s3
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Remove-WmiObject], ManagementException
    + FullyQualifiedErrorId : RemoveWMIManagementException,Microsoft.PowerShell.Commands.RemoveWmiObject

PS D:\> 

对于我的情况，我需要运行“作为管理员”

由于此版本中不存在删除服务，因此要在Powershell 5.0中删除多个服务

运行以下命令

Get-Service -Displayname "*ServiceName*" | ForEach-object{ cmd /c  sc delete $_.Name}

结合Dmitri和dcx的答案，我做到了：

function Confirm-WindowsServiceExists($name)
{   
    if (Get-Service $name -ErrorAction SilentlyContinue)
    {
        return $true
    }
    return $false
}

function Remove-WindowsServiceIfItExists($name)
{   
    $exists = Confirm-WindowsServiceExists $name
    if ($exists)
    {    
        sc.exe \\server delete $name
    }       
}

一个可以使用Where-Object

if ((Get-Service | Where-Object {$_.Name -eq $serviceName}).length -eq 1) { "Service Exists" }

要检查Windows服务是否MySuperServiceVersion1存在，即使您不确定其确切名称，也可以使用通配符，使用如下所示的子字符串：

 if (Get-Service -Name "*SuperService*" -ErrorAction SilentlyContinue)
{
    # do something
}

对于单台PC：

if (Get-Service "service_name" -ErrorAction 'SilentlyContinue'){(Get-WmiObject -Class Win32_Service -filter "Name='service_name'").delete()}

else{write-host "No service found."}

PC列表的宏：

$name = "service_name"

$list = get-content list.txt

foreach ($server in $list) {

if (Get-Service "service_name" -computername $server -ErrorAction 'SilentlyContinue'){
(Get-WmiObject -Class Win32_Service -filter "Name='service_name'" -ComputerName $server).delete()}

else{write-host "No service $name found on $server."}

}

PowerShell Core（v6 +）现在具有一个Remove-Servicecmdlet。

我不知道将其反向移植到Windows PowerShell的计划，该版本从v5.1开始不可用。

例：

# PowerShell *Core* only (v6+)
Remove-Service someservice

请注意，如果服务不存在，则调用将失败，因此，仅在当前存在服务时将其删除，您可以执行以下操作：

# PowerShell *Core* only (v6+)
$name = 'someservice'
if (Get-Service $name -ErrorAction Ignore) {
  Remove-Service $name
}

• 对于v6之前的PowerShell版本，您可以执行以下操作：

  Stop-Service 'YourServiceName'; Get-CimInstance -ClassName Win32_Service -Filter "Name='YourServiceName'" | Remove-CimInstance

• 对于v6 +，可以使用Remove-Service cmdlet。

请注意，从Windows PowerShell 3.0开始，该cmdlet Get-WmiObject已被Get-CimInstance取代。

对此进行了修改，以获取服务器的输入列表，指定主机名并提供一些有用的输出

            $name = "<ServiceName>"
            $servers = Get-content servers.txt

            function Confirm-WindowsServiceExists($name)
            {   
                if (Get-Service -Name $name -Computername $server -ErrorAction Continue)
                {
                    Write-Host "$name Exists on $server"
                    return $true
                }
                    Write-Host "$name does not exist on $server"
                    return $false
            }

            function Remove-WindowsServiceIfItExists($name)
            {   
                $exists = Confirm-WindowsServiceExists $name
                if ($exists)
                {    
                    Write-host "Removing Service $name from $server"
                    sc.exe \\$server delete $name
                }       
            }

            ForEach ($server in $servers) {Remove-WindowsServiceIfItExists($name)}

Windows Powershell 6将具有Remove-Service cmdlet。截至目前，Github版本显示PS v6 beta-9

来源： https : //docs.microsoft.com/zh-cn/powershell/module/microsoft.powershell.management/remove-service?view=powershell-6