Question

我有一个计数器脚本，需要两个参数：

1）在计数器开始前等待的秒数。

2）以秒为单位的计数器持续时间。

例如，如果我输入3,10 我想在3秒后计时器将从10倒数到0，并每秒将其写入输出。

这是我的剧本：

$timeBeforeStart = $args[0]
$waitSeconds = $args[1]  

$startTime = get-date
$endTime   = $startTime.addSeconds($waitSeconds)
$timeSpan = new-timespan $startTime $endTime
start-sleep -s $timeBeforeStart
while ($timeSpan -gt 0) 
{
    $timeSpan = new-timespan $(get-date) $endTime
    write-host $([string]::Format("`rTime Remaining: {0:d2}:{1:d2}:{2:d2}",
    $timeSpan.hours, $timeSpan.minutes, $timeSpan.seconds)) 
    sleep 1
}

不幸的是它不起作用，睡眠似乎与计数器同时工作而不是延迟计数器。

PS C:\> c:\555.ps1 3 10 
Time Remaining: 00:00:07
Time Remaining: 00:00:05
Time Remaining: 00:00:04
Time Remaining: 00:00:03
Time Remaining: 00:00:02
Time Remaining: 00:00:01
Time Remaining: 00:00:00
Time Remaining: 00:00:00

我也尝试过 start-sleep -s ，结果也一样。

顺便问一下，睡眠与“开始睡眠-s”有什么区别？

Answer 1

睡眠和“开始睡眠-s”之间有什么区别？

没有区别，sleep只是Start-Sleep的别名。

不幸的是它不起作用，睡眠似乎与计数器同时工作而不是延迟计数器。

您可能希望在计数器开始之前将睡眠置于第一个$timeSpan：

之前

start-sleep -s $timeBeforeStart

$startTime = get-date
$endTime   = $startTime.addSeconds($waitSeconds)
$timeSpan = new-timespan $startTime $endTime
while ($timeSpan -gt 0) 
{
 # ...
}

Answer 2

尝试这种方式：

$timeBeforeStart = 3
$waitSeconds = 10

Start-Sleep -Seconds $timeBeforeStart

$waitSeconds..0 | Foreach-Object {
    Write-Host "Time Remaining: $_"
    Start-Sleep -Seconds 1
}


Time Remaining: 10
Time Remaining: 9
Time Remaining: 8
Time Remaining: 7
Time Remaining: 6
Time Remaining: 5
Time Remaining: 4
Time Remaining: 3
Time Remaining: 2
Time Remaining: 1
Time Remaining: 0

Answer 3

尝试这种方式：

$timeBeforeStart = 0
$waitSeconds = 60

Start-Sleep -Seconds $timeBeforeStart

$waitSeconds..0 | Foreach-Object {
    Write-Host "`r          Time Remaining: $_ " -NoNewline -foregroundcolor green
    Start-Sleep -Seconds 1
}

Answer 4

这也是做同样的事情：

$timeBeforeStart = 3
$waitSeconds = 10

Start-Sleep -Seconds $timeBeforeStart
$endTime = (get-date).addSeconds($waitSeconds)

while ( (get-date) -lt $endTime )
    {
    Write-Host "Time Remaining: $("{0}" -f ([int](new-timespan $(get-date) $endTime).totalseconds))"
    Start-Sleep -Seconds 1
    }

Powershell - 我的倒数计时器出了什么问题

4 个答案: