定时任务结果

Question

我们正在尝试检索Windows 7客户端上登录用户的映射驱动器。下面的代码在使用管理员帐户运行时会为我们执行此操作。

唯一的问题是，偶尔(当第一次在新客户机上运行代码时)，它不会在第一次运行时返回'PS_Data.txt‘文件的结果。当第二次运行时，数据被正确返回。由于这样或那样的原因，文件中填充了正确的数据，但没有检索到。

我一直在想，这个任务删除得太快了，所以我试着到处玩一些Start-Sleep CmdLets，但什么都没有真正解决它。

#$Computer = 'ClientName'; $User = 'LoggedOnUserSamAccountName'

$VerbosePreference = 'Continue'

Invoke-Command -ScriptBlock {
    Param (
        [Parameter(Mandatory)]
        [String]$User,
        [Parameter(Mandatory)]
        [String]$TaskName
    )

    $VerbosePreference = [System.Management.Automation.ActionPreference]$Using:VerbosePreference
    $DebugPreference = [System.Management.Automation.ActionPreference]$Using:DebugPreference

    $CurrentDir = 'C:\Users\' + $User + '\AppData\Local\Temp'
    $Script     = $CurrentDir + '\PS_Script.ps1'
    $Launcher   = $CurrentDir + '\PS_Launcher.vbs'
    $File       = $CurrentDir + '\PS_Data.txt'

    $File, $Script, $Launcher | Remove-Item -EA Ignore

    # VB is only needed to kick-of the script and suppress the PowerShell window
    # and to set the workdir
    $VBCode = @"
        'run window totally hidden
        Dim oSHELL
        Set oSHELL = CreateObject("WScript.Shell")
        oSHELL.CurrentDirectory = "$CurrentDir"
        oSHELL.Run "powershell.exe -ExecutionPolicy Bypass -NoLogo -File .\PS_Script.ps1", 0
        Set oSHELL = Nothing
"@

    $PSCode = {
        Get-WmiObject -Class win32_mappedlogicaldisk | Select-Object Name, ProviderName |
            Export-Csv .\PS_Data.txt -NoTypeInformation
    }

    Try {
        $VBCode | Set-Content $Launcher -EA Stop
        Write-Verbose ($env:COMPUTERNAME + " Temp file created '$Launcher'")

        $PSCode | Set-Content $Script -EA Stop
        Write-Verbose ($env:COMPUTERNAME + " Temp file created '$Script'")
    }
    Catch {
        throw "User profile folder '$CurrentDir' not found on '$env:COMPUTERNAME'"
    }

    Try {
        #schtasks /create /F /RL HIGHEST /SC ONCE /ST 23:00 /TN $TaskName /TR "wscript.exe $Launcher" /RU "$env:USERDNSDOMAIN\$User"
        $Task = New-Object -ComObject "Schedule.Service"
        $Task.Connect($env:COMPUTERNAME)
        $Task_Folder = $Task.GetFolder('\')
        $Task_TaskDefinition = $Task.NewTask(0)

        $Task_RegistrationInfo = $Task_TaskDefinition.RegistrationInfo
        $Task_RegistrationInfo.Description = 'This task is created with PowerShell to run with user credentials'
        $Task_RegistrationInfo.Author = 'Powershell'

        $Task_Settings = $Task_TaskDefinition.Settings
        $Task_Settings.Enabled = $True
        $Task_Settings.StartWhenAvailable = $True
        $Task_Settings.Hidden = $False
        $Task_Settings.AllowDemandStart = $True
        $Task_Settings.WakeToRun = $True
        $Task_Settings.StopIfGoingOnBatteries = $False

        $Task_Action = $Task_TaskDefinition.Actions.Create(0)
        $Task_Action.Path = 'wscript.exe'
        $Task_Action.Arguments = $Launcher
        $Task_Action.WorkingDirectory = $CurrentDir

        $Task_Folder.RegisterTaskDefinition($TaskName, $Task_TaskDefinition, 6, ($env:USERDNSDOMAIN + '\' + $User), $null, 3) | Out-Null
        Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is created")

        schtasks /run /TN $TaskName | Write-Verbose
        Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is started as user '$User'")
        #Start-Sleep -Seconds 3

        # Wait for scheduled task to finish
        while ((& schtasks.exe /query /TN $TaskName /FO CSV | ConvertFrom-Csv | Select-Object -ExpandProperty Status -First 1) -eq 'Running') {
            Write-Verbose ($env:COMPUTERNAME + " Scheduled Task '$TaskName' is running")
            Start-Sleep -Milliseconds 500
        }
        Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is finished")
    }
    Catch {
        throw "Failed creating/running the scheduled rask '$TaskName' on '$env:COMPUTERNAME': $_"
    }

    # Wait for the data file to be available
    for ($i = 0; $i -le 5; $i++) {
        if (Test-Path $File) {
            Import-Csv $File | Select-Object * -ExcludeProperty RunspaceID
            Write-Verbose ($env:COMPUTERNAME + " Temp file created and data imported '$File'")
            $Data = $True
            Break
        }
        else {
            Start-Sleep -Seconds 1
        }
    }

    if (-not $Data) {
        Write-Verbose ($env:COMPUTERNAME + " No data found")
    }

    #schtasks /delete /F /TN $TaskName
    $Task_Folder.DeleteTask($TaskName, 0)
    Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is deleted")

    #$File, $Script, $Launcher | Remove-Item -EA Ignore
    Write-Verbose ($env:COMPUTERNAME + " Temp files removed")
} -ComputerName $Computer -ArgumentList $User, 'Test'

Answer 1

问题已修复，似乎计划任务只踢了脚本，但在完成之前不会停留在Running状态。通过将VB代码修改为以下代码，已修复此问题：

oSHELL.Run "powershell.exe -ExecutionPolicy Bypass -NoLogo -File .\PS_Script.ps1", 0, True

希望这对某些人有帮助。

在完整版和增强版下面，所有正确的停顿都是为了正确创建和检查计划任务：

Invoke-Command -ScriptBlock {
    Param (
        [Parameter(Mandatory)]
        [String]$User,
        [Parameter(Mandatory)]
        [String]$TaskName
    )

    $VerbosePreference = [System.Management.Automation.ActionPreference]$Using:VerbosePreference
    $DebugPreference = [System.Management.Automation.ActionPreference]$Using:DebugPreference

    $CurrentDir = 'C:\Users\' + $User + '\AppData\Local\Temp'
    $Script     = $CurrentDir + '\PS_Script.ps1'
    $Launcher   = $CurrentDir + '\PS_Launcher.vbs'
    $File       = $CurrentDir + '\PS_Data.txt'

    $File, $Script, $Launcher | Remove-Item -EA Ignore

    #region Create temp files
    Try {
        # VB is only needed to kick-of the script and suppress the PowerShell window and to set the workdir
        $VBCode = @"
            'run window totally hidden
            Dim oSHELL
            Set oSHELL = CreateObject("WScript.Shell")
            oSHELL.CurrentDirectory = "$CurrentDir"
            oSHELL.Run "powershell.exe -ExecutionPolicy Bypass -NoLogo -File .\PS_Script.ps1", 0, True
            Set oSHELL = Nothing
"@
        $VBCode | Set-Content $Launcher -EA Stop
        Write-Verbose ($env:COMPUTERNAME + " Temp file created '$Launcher'")

        $PSCode = {
            Start-Sleep -Seconds 5

            Get-WmiObject -Class win32_mappedlogicaldisk | Select-Object Name, ProviderName |
                Export-Csv .\PS_Data.txt -NoTypeInformation
        }
        $PSCode | Set-Content $Script -EA Stop
        Write-Verbose ($env:COMPUTERNAME + " Temp file created '$Script'")
    }
    Catch {
        throw "User profile folder '$CurrentDir' not found on '$env:COMPUTERNAME'"
    }
    #endregion

    Try {
        #region Create scheduled task
        #schtasks /create /F /RL HIGHEST /SC ONCE /ST 23:00 /TN $TaskName /TR "wscript.exe $Launcher" /RU "$env:USERDNSDOMAIN\$User"
        $Task = New-Object -ComObject "Schedule.Service"
        $Task.Connect($env:COMPUTERNAME)
        $Task_Folder = $Task.GetFolder('\')
        $Task_TaskDefinition = $Task.NewTask(0)

        $Task_RegistrationInfo = $Task_TaskDefinition.RegistrationInfo
        $Task_RegistrationInfo.Description = 'This task is created with PowerShell to run with user credentials'
        $Task_RegistrationInfo.Author = 'Powershell'

        $Task_Settings = $Task_TaskDefinition.Settings
        $Task_Settings.Enabled = $True
        $Task_Settings.StartWhenAvailable = $True
        $Task_Settings.Hidden = $False
        $Task_Settings.AllowDemandStart = $True
        $Task_Settings.WakeToRun = $True
        $Task_Settings.StopIfGoingOnBatteries = $False
        $Task_Settings.DisallowStartIfOnBatteries = $False

        $Task_Action = $Task_TaskDefinition.Actions.Create(0)
        $Task_Action.Path = 'wscript.exe'
        $Task_Action.Arguments = $Launcher
        $Task_Action.WorkingDirectory = $CurrentDir

        $Task_Folder.RegisterTaskDefinition($TaskName, $Task_TaskDefinition, 6, ($env:USERDNSDOMAIN + '\' + $User), $null, 3) | Out-Null
        Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is created")
        #endregion

        #region Run scheduled task
        $StartDateUTC = (Get-Date).ToUniversalTime()
        schtasks /run /TN $TaskName | Write-Verbose
        Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is started as user '$User'")
        #endregion

        #region Wait for scheduled task to finish
        # Initial wait time because tasks don't start fast enough
        Start-Sleep -Seconds 1

        while ($Task_Folder.GetTask($TaskName).State -ne 3) {
            Write-Verbose ($env:COMPUTERNAME + " Scheduled Task '$TaskName' is running")
            Start-Sleep -Seconds 1
        }
        Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is finished")
        #endregion


        #region Check eventlog for failures because user might not be logged in
        $Date ="{0}-{1}-{2}T{3}:{4}:{5}.{6}z" -f $StartDateUTC.Year, $StartDateUTC.Month, $StartDateUTC.Day, 
            $StartDateUTC.Hour, $StartDateUTC.Minute, $StartDateUTC.Second, $StartDateUTC.Millisecond

        # Initial wait time for the task to write to the eventlog
        Start-Sleep -Seconds 1

        $Problems = Get-WinEvent -ErrorAction Ignore -FilterXml @"
            <QueryList>
              <Query Id="0" Path="Microsoft-Windows-TaskScheduler/Operational">
                <Select Path="Microsoft-Windows-TaskScheduler/Operational">
                    *[EventData/Data[@Name='TaskName']='\$TaskName'] and 
                    *[System[Provider[@Name='Microsoft-Windows-TaskScheduler'] and 
                    (Level=1 or Level=2 or Level=3) and 
                    TimeCreated[@SystemTime&gt;='$Date']]]</Select>
              </Query>
            </QueryList>
"@
        if ($Problems) {
            if ($Problems.Message -like '*2147943645*') {
                throw "The scheduled task can only run when the user is logged on to the client, because we use the user's credentials to run this task."
            }
            else {
                throw $Problems.Message
            }
        }
        #endregion
    }
    Catch {
        throw "Failed creating/running the scheduled rask '$TaskName' on '$env:COMPUTERNAME': $_"
    }

    #region Get results
    if (Test-Path $File) {
        Import-Csv $File | Select-Object * -ExcludeProperty RunspaceID
        Write-Verbose ($env:COMPUTERNAME + " Temp file created and data imported '$File'")            
    }
    else {
            Write-Verbose ($env:COMPUTERNAME + " No data found")
    }
    #endregion

    #region Delete temp files and task
    #schtasks /delete /F /TN $TaskName
    $Task_Folder.DeleteTask($TaskName, 0)
    Write-Verbose ($env:COMPUTERNAME + " Scheduled task '$TaskName' is deleted")

    $File, $Script, $Launcher | Remove-Item -EA Ignore
    Write-Verbose ($env:COMPUTERNAME + " Temp files removed")
    #endregion
} -ComputerName $Computer -ArgumentList $User, 'Test'