Powershell重启控制台问题

Question

我有一个登录脚本，如果它已经超过允许的时间，则重新启动PC。

我有一个在登录期间运行的PowerShell脚本，每周执行一次以检查机器的正常运行时间，如果超过48小时则重新启动。该脚本允许用户请求扩展，以便它们不会立即从机器上踢出。我有1小时，3小时，8小时的延期。只有1,3小时的延期工作。看来，如果输入的值大于3，则不接受它。有没有办法让这个“扩展”工作超过3个小时？

<#
.SYNOPSIS
    Script displays an interactive popup that display the reason for having the reboot the computer.
.DESCRIPTION
     The reboot script gives users the option to reboot now or delay the reboot for 1, 3, or 6 hours
.EXAMPLE
    Script executes from the login script
.INPUTS
    N/A
.OUTPUTS
    N/A
.NOTES
    General notes
#>

try {
    Add-Type -AssemblyName PresentationCore, PresentationFramework, WindowsBase, system.windows.forms
} 
catch {}

#Calculate the time since last reboot

$lastBootTime = Get-CimInstance -ClassName Win32_OperatingSystem | Select-Object LastBootUpTime | ForEach-Object { Get-Date -Date $_.LastBootUpTime }
$Time = (Get-Date) - $lastBootTime

#if last reboot is less than 2 days exit the script.
if ($Time.TotalHours -lt 48) {
    exit
}

#if computer has a server os, exit
$version = (Get-CimInstance -ClassName Win32_OperatingSystem).caption

if($version -match "server")
{
    exit
}

<#
 # Set Sync hash
 #>
$Global:hash = [hashtable]::Synchronized(@{})
$Global:hash.Stopwatch = New-Object System.Diagnostics.Stopwatch
$Global:hash.Timer = New-Object System.Windows.Forms.Timer
$Global:hash.Timer.Enabled = $true
$Global:hash.Timer.Interval = 1000


<#
 # Form design XML
 #>
[xml]$xaml = @'
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Name="window" Height="340" Width="400" Title="Mandatory Reboot"  WindowStartupLocation="CenterScreen" Background="Transparent" AllowsTransparency="True"
ResizeMode="NoResize" ShowInTaskbar="True"  SizeToContent="Height" Topmost="True" WindowStyle="None">
    <Window.Resources>
        <SolidColorBrush x:Key="Brush_ChromeBackground" Color="#FFC8D1E0"/>
        <SolidColorBrush x:Key="Brush_ChromeBorder" Color="#FFA0A0A0"/>
    </Window.Resources>
    <Border x:Name="Border_Chrome"  BorderBrush="{StaticResource Brush_ChromeBorder}" BorderThickness="5"  CornerRadius="10"  Width="Auto" Background="#FFCD3232">
        <Grid Margin="15" >
            <Grid.RowDefinitions>
                <RowDefinition Height="120"></RowDefinition>
                <RowDefinition Height="60"></RowDefinition>
                <RowDefinition Height="60"></RowDefinition>
                <RowDefinition Height="60"></RowDefinition>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="50"></ColumnDefinition>
                <ColumnDefinition Width="*"></ColumnDefinition>
                <ColumnDefinition Width="50"></ColumnDefinition>
            </Grid.ColumnDefinitions>
            <TextBlock TextWrapping="Wrap" Grid.Column="0" Grid.ColumnSpan="3" FontSize="14" Foreground="White">
                <Bold FontSize="16">Mandatory Reboot</Bold><LineBreak/>
                This computer exceeds the maximum allowed uptime. Your computer will be automatically rebooted unless manually restarted or an extension is requested.<LineBreak/>
            </TextBlock>
            <Button Name="RestartNowBtn" Grid.Column="1" Grid.Row="1" Grid.ColumnSpan="3" Width="240" Height="40" HorizontalContentAlignment="Center" HorizontalAlignment="Left">
                <StackPanel Orientation="Horizontal" >
                    <Label Content="Restart Now" FontWeight="Bold"></Label>
                </StackPanel>
            </Button>
            <StackPanel Orientation="Horizontal" Grid.Row="2" Grid.Column="1" Grid.ColumnSpan="3" Margin="5,8" >
                <GroupBox Width="100" Header="Postpone">
                    <ComboBox Name="ScheduleValue" VerticalAlignment="Center" >
                        <ComboBoxItem Name="one" Selector.IsSelected="True">1</ComboBoxItem>
                        <ComboBoxItem Name="three">3</ComboBoxItem>
                        <ComboBoxItem Name="eight">8</ComboBoxItem>
                    </ComboBox>
                </GroupBox>
                <TextBlock Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="10,0" FontWeight="Bold">Hour(s)</TextBlock>
                <Button Content="Request Extension" Name="scheduleBtn" Width="110" FontWeight="Bold"></Button>
            </StackPanel>
            <Grid Grid.Row="3" Grid.ColumnSpan="3" Margin="10">
                <ProgressBar Name="Time" Maximum="100" Value="100"></ProgressBar>
                <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center">Time to Automatic Reboot (All unsaved work will be lost)</TextBlock>
            </Grid>
        </Grid>
    </Border>
</Window>
'@

$Global:hash.window = [Windows.Markup.XamlReader]::Load((New-Object -TypeName System.Xml.XmlNodeReader -ArgumentList $xaml))

#Connect to Control
$xaml.SelectNodes("//*[@Name]") | ForEach-Object -Process { 
    $Global:hash.$($_.Name) = $Global:hash.window.FindName($_.Name)
}

<#
 # Restart Now Button Even Handler
 #>
$Global:hash.RestartNowBtn.Add_Click( {
        #Stop the timer so that the auto reboot dosen't happen
        $Global:hash.Timer.Stop()
        #Force Reboot Now!
        cmd.exe /c shutdown.exe -r -d P:0:0 -t 60 -f
        $Global:hash.window.Close()
    })

<#
 # Schedule Button Click event handler
 #>
$Global:hash.ScheduleBtn.Add_Click( {

        switch ($Global:hash.ScheduleValue.SelectedItem.Name) {
            "one" {
                $rebootTime = (Get-Date).AddHours(1).TimeOfDay.TotalSeconds
            }
            "three" {
                $rebootTime = (Get-Date).AddHours(3).TimeOfDay.TotalSeconds
            }
            "eight" {
                $rebootTime = (Get-Date).AddHours(8).TimeOfDay.TotalSeconds
            }
        }

        $startTime = [Math]::Round(($rebootTime - (Get-Date).TimeOfDay.TotalSeconds), 0)

        #Stop the timer so that the auto reboot dosen't happen
        $Global:hash.Timer.Stop()

        cmd.exe /c shutdown.exe -r -d P:0:0 -t $startTime -f 

        $Global:hash.Window.Close()
    })

<#
 # Form Loaded Event Handler
 #>
$Global:hash.window.Add_Loaded( {

        $Global:hash.Stopwatch.Start()
        $Global:hash.Timer.Add_Tick( {
                [timespan]$secs = $Global:hash.Stopwatch.Elapsed

                if ($secs.TotalSeconds -gt 120) {
                    cmd.exe /c shutdown.exe -r -d P:0:0 -t 60 -f
                    $Global:hash.Timer.Stop()
                    $Global:hash.window.Close()
                    exit
                }

                $Global:hash.Time.Value = (100 - (($secs.TotalSeconds / 120) * 100))
            })

        $Global:hash.Timer.Start()
    })

<#
 # Start the form
 #>
$Global:hash.window.ShowDialog() | Out-Null

我想允许延长8小时，但不允许> 3。

Answer 1

这是shutdown.exe可执行文件的限制。根据此处的文档：

https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/shutdown

/t <XXX>    Sets the time-out period or delay to XXX seconds before a restart or 
            shutdown. This causes a warning to display on the local console. You can 
            specify 0-600 seconds. If you do not use /t, the time-out period is 30 
            seconds by default.

如果你想超越它，你必须在执行shutdown.exe之前在PowerShell中创建暂停。这可以通过在8小时选项中添加start-sleep，睡眠3小时，然后指定最大600秒计时器来完成。

编辑：看起来文档已过期，现在关机可接受长达10年的任何事情（格式化为秒）。看，shutdown命令只需要几秒钟。你应该能够用秒x分钟x小时来计算，而不是你正在尝试的所有花哨的数学。一分钟60秒，一小时60分钟，所以唯一改变的是延迟的小时数。试试这个：

$Global:hash.ScheduleBtn.Add_Click( {

    $startTime = switch ($Global:hash.ScheduleValue.SelectedItem.Name) { 
        "one" { 1*60*60 } 
        "three" { 3*60*60 } 
        "eight" { 8*60*60}
    }
    $Global:hash.Timer.Stop()

    cmd.exe /c shutdown.exe -r -d P:0:0 -t $startTime -f 

    $Global:hash.Window.Close()
}