shell - 如何在Powershell中更轻松地操纵时间跨度

我正在为Powershell分配任务，其中一项功能是说上次启动的时间。我正在打印日期和“自此的时间”，日期工作正常，但我认为显示“自从的时间”的代码太多。我希望第一个值不为零。像这样:



而不是这样:

$bootDate = (Get-CimInstance Win32_OperatingSystem).LastBootUpTime
$bootTime = $(Get-Date).Subtract($bootDate)
# Think there is an easier way, but couldn't find any :/
$time = ""
if($bootTime.Days -ne 0) {
  $time = "$($bootTime.Days) Days, $($bootTime.Hours) Hours, $($bootTime.Minutes) Minutes, "
} elseif($bootTime.Hours -ne 0){
    $time = "$($bootTime.Hours) Hours, $($bootTime.Minutes) Minutes, "
} elseif($bootTime.Minutes -ne 0){
    $time = "$($bootTime.Minutes) Minutes, "
}
echo "Time since last boot: $time$($bootTime.Seconds) Seconds"
echo "Date and time:        $($bootDate.DateTime)"

这段代码可以按我的意愿进行打印，但是对于这么少的东西来说似乎太多了。有没有更简单的方法？

最佳答案

确保检查TotalDays而不是Days。另外，我会将代码拆分为一个单独的函数:

function Get-TruncatedTimeSpan {
  param([timespan]$TimeSpan)

  $time = ""

  if($TimeSpan.TotalDays -ge 1) {
    $time += "$($TimeSpan.Days) Days, "
  }
  if($TimeSpan.TotalHours -ge 1){
    $time += "$($TimeSpan.Hours) Hours, "
  }
  if($TimeSpan.TotalMinutes -ge 1){
    $time += "$($TimeSpan.Minutes) Minutes, "
  }
  return "$time$($TimeSpan.Seconds) Seconds"
}

$bootDate = (Get-CimInstance Win32_OperatingSystem).LastBootUpTime
$bootTime = $(Get-Date).Subtract($bootDate)

echo "Time since last boot: $(Get-TruncatedTimeSpan $bootTime)"
echo "Date and time:        $($bootDate.DateTime)"

关于shell - 如何在Powershell中更轻松地操纵时间跨度，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49287595/