Here’s how you accomplish the same task in Windows PowerShell: 复制 $x[-1] What’s that? What about the second-to-the-last item in the array? No problem: 复制 $x[-2] Etc. But wait, there’s more. Suppose you
As you might expect, Windows PowerShell enables you to do the same thing, and with very similar syntax; for example, this code echoes back the value of item 3 in a PowerShell array: Copy $x[2] But that’s not the half of it. Want to echo back the last item in the array?
23.Get-PSDrive:获取当前会话中的 Windows PowerShell 驱动器 24.Get-Item:获取位于指定位置的项 25.Get-Process :获取在本地计算机或远程计算机上运行的进程 26.Get-Service : 获取本地或远程计算机上的服务 27.Get-Transaction :获取当前(活动)事务 28.Get-ExecutionPolicy :获取当前会话中的执行策略 二.Set类 ...
$array = 1..5 | ForEach-Object { "ATX-SQL-$PSItem" } 通常,当我们考虑使用管道时,我们会想到典型的 PowerShell 单行命令。 可以通过 foreach() 语句和其他循环来利用管道。 因此,我们可以将项放到管道中,而不是在循环中向数组添加项。PowerShell 复制 ...
$array = 1..5 | ForEach-Object { "ATX-SQL-$PSItem" } 通常當我們想到使用管線時,我們會考慮一般的 PowerShell 單行程式。 我們可以利用管線搭配 foreach() 語句和其他迴圈。 因此,我們可以將專案卸除至管線,而不是在迴圈中將專案新增至陣列。Power...
Negative numbers count from the end of the array. For example, -1 refers to the last element of the array. To display the last three elements of the array, in index ascending order, type:PowerShell Copy $a = 0 .. 9 $a[-3..-1] Output Copy ...
8.Set-Item :将项的值更改为命令中指定的值 9.Set-Service :启动、停止和挂起服务并更改服务的属性 10.Set-Content :在项中写入内容或用新内容替换其中的内容 11.Set-ItemProperty :创建或更改某一项的属性值 12.Set-WmiInstance :创建或更新现有 Windows Management Instrumentation (WMI) 类的实例 ...
Selects objects from indexed collections, such as arrays and hash tables. Array indexes are zero-based, so the first object is indexed as[0]. You can also use negative indexes to get the last values. Hash tables are indexed by key value. ...
A stack is a last-in, first-out list in which only the most recently added item is accessible. You add items to a stack in the order that you use them, and then retrieve them for use in the reverse order. PowerShell lets you store provider locations in location stacks. PowerShell ...
0, indicating the index number of our default option. In this case, we wantYesto be the default option, so we pass PromptForChoice the value0; that’s becauseYesis the first item in our array of menu options. (And the first item in an array always has the index number 0.) What ...