Powershell中的變量中的字符串行

Question

我想監視服務並在啓動模式爲Auto時啓動它們。

$WMI = Get-WmiObject Win32_Service | 
Where-Object { $_.StartMode -eq 'Auto' -and $_.State -ne 'Running' -and $_.DisplayName -notlike 'Microsoft .NET Framework NGEN v4.0.30319_X86' -and $_.DisplayName -notlike 'Windows Image Acquisition (WIA)' -and $_.DisplayName -notlike 'Microsoft .NET Framework NGEN v4.0.30319_X64' -and $_.DisplayName -notlike 'Software Protection' -and $_.DisplayName -notlike 'Google Update Service (gupdate)' -and $_.DisplayName -notlike 'Google Update-service (gupdate)' -and $_.DisplayName -notlike 'Pml Driver HPZ12' -and $_.DisplayName -notlike 'Shell Hardware Detection' -and $_.DisplayName -notlike 'Group Policy Client' -and $_.DisplayName -notlike 'Multimedia Class Scheduler' -and $_.DisplayName -notlike 'Skype Updater' -and $_.DisplayName -notlike 'Remote Registry' -and $_.DisplayName -notlike 'TPM Base Services' -and $_.DisplayName -notlike 'Windows Update' -and $_.DisplayName -notlike 'Windows Modules Installer' -and $_.DisplayName -notlike 'Smart Card'} | Select DisplayName,State 

在我的情況下執行時，這給了我兩個結果：

$displayname = $WMI | select Displayname 

結果：

DisplayName                                
-----------                                
SQL Server Agent (JOURNYX)                            
Performance Logs and Alerts 

我不能讓它使用foreach

工作時，此因爲最後當我使用Start-Service $displayname它試圖啓動@{DisplayName=SQL Server Agent (JOURNYX)}

現在這是我的腳本：

$WMI = Get-WmiObject Win32_Service | 
Where-Object { $_.StartMode -eq 'Auto' -and $_.State -ne 'Running' -and $_.DisplayName -notlike 'Microsoft .NET Framework NGEN v4.0.30319_X86' -and $_.DisplayName -notlike 'Windows Image Acquisition (WIA)' -and $_.DisplayName -notlike 'Microsoft .NET Framework NGEN v4.0.30319_X64' -and $_.DisplayName -notlike 'Software Protection' -and $_.DisplayName -notlike 'Google Update Service (gupdate)' -and $_.DisplayName -notlike 'Google Update-service (gupdate)' -and $_.DisplayName -notlike 'Pml Driver HPZ12' -and $_.DisplayName -notlike 'Shell Hardware Detection' -and $_.DisplayName -notlike 'Group Policy Client' -and $_.DisplayName -notlike 'Multimedia Class Scheduler' -and $_.DisplayName -notlike 'Skype Updater' -and $_.DisplayName -notlike 'Remote Registry' -and $_.DisplayName -notlike 'TPM Base Services' -and $_.DisplayName -notlike 'Windows Update' -and $_.DisplayName -notlike 'Windows Modules Installer' -and $_.DisplayName -notlike 'Smart Card'} | Select DisplayName,State 


$displayname = $WMI | select Displayname 

foreach ($servicename in $displayname) { 

try { 

start-service $Servicename.DisplayName -ErrorAction stop 

Write-host "Service" $servicename.displayname "started, after being failed" 

exit 1001 

} 

catch { 

Write-Host "Tried to start" $servicename.displayname "Service, but failed" 

exit 1001 

} 

} 

write-host "Services reporting OK" 
Exit 0 

Answer 1

你有一個對象$ WMI，與狀態值和顯示名稱中它。

當您執行$displayname = $WMI | select Displayname時，您仍然有一個對象，它現在名爲$displayname，其中有一個名爲displayname的值。所以你需要引用該值：

Start-Service $displayname.displayname。

在某些情況下，最好使用Start-Service $($displayname.displayname)，因此PS可以在將其用作參數之前評估該值。

Answer 2

您需要將'name'屬性傳遞給Start-Service。

gwmi win32_service | ? {$_.StartMode -eq 'Auto' -and $_.State -ne 'Running'} | Select -ExpandProperty Name | Start-Service 

請將您的過濾器添加到Where-Object（？）中。