指定時刻まで待つpowershell

start-wait-ui.ps1

function Start-Wait-Ui() {
    param(
        [Parameter(ValueFromPipeline = $true)]
        [DateTime]$enddate = (Get-Date).AddMinutes(30)
    )
    $rawui = $Host.ui.rawui
    while ( ($remain = $enddate - (get-date)) -ge 0) {
        while ($rawui.KeyAvailable) {
            switch ($rawui.Readkey("NoEcho,IncludeKeyUp").Character) {
                'y' { return }
            }
        }
        Write-Progress -Activity "Waiting..." -Status "For $enddate, or Press Y to continue right now" -SecondsRemaining $remain.TotalSeconds
        Start-Sleep -Seconds 1
    }
}
#(Get-Date).AddMinutes(10)|Start-Wait-Ui

start-wait-ui2.ps1

function Start-Wait-Ui() {
    [CmdletBinding(DefaultParameterSetName = "Set1")]
    param(
        [Parameter(ValueFromPipeline = $true, ParameterSetName = "Set1")]
        [DateTime]$enddate = (Get-Date).AddMinutes(30),
        [Parameter(Position = 0, ValueFromPipeline = $true, ParameterSetName = "Set2")]
        [Int]
        $Seconds = 0,
        [Parameter(ParameterSetName = "Set2")]
        [Int]
        $Milliseconds = 0
    )
    if ($PSCmdlet.ParameterSetName.Equals("Set2")) {
        $enddate = (Get-Date).AddSeconds($Seconds).AddMilliseconds($Milliseconds)
    }
    $rawui = $Host.ui.rawui
    while ( ($remain = $enddate - (get-date)) -ge 0) {
        while ($rawui.KeyAvailable) {
            switch ($rawui.Readkey("NoEcho,IncludeKeyUp").Character) {
                'y' { return }
            }
        }
        Write-Progress -Activity "Waiting..." -Status "For $enddate, or Press Y to continue right now" -SecondsRemaining $remain.TotalSeconds
        Start-Sleep -Milliseconds 200
    }
}
#Start-Wait-Ui #30minutes
#(Get-Date).AddMinutes(10)|Start-Wait-Ui #10minutes
#Start-Wait-Ui 10 #10seconds
#Start-Wait-Ui -Milliseconds 500 #500milliseconds

start-wait.ps1

function Start-Wait() {
    param(
        [Parameter(ValueFromPipeline = $true)]
        [DateTime]$enddate = (Get-Date).AddMinutes(30)
    )
    while ( ($remain = $enddate - (get-date)) -ge 0) {
        Write-Progress -Activity "Waiting..." -Status "For $enddate" -SecondsRemaining $remain.TotalSeconds;
        Start-Sleep -Seconds 1
    }
}