The way to add a new element to an existing array is to use the += operator as shown here. $a += 12 The commands to create an array, get the upper boundary of an array, change an element in an array, and add a new element to an array are shown here with their associated outpu...
$array1 = 2,1,3 [System.Collections.ArrayList]$array2 = "string1",'string2','string3','string4','string5','string6' foreach($element in $array1){ $my_variable = $array2[0..($element - 1)] Write-Host my_variable contains $my_variable $array2.RemoveRange(0,$element) } 因...
You can refer to the elements in an array using an index. Enclose the index number in brackets. Index values start at 0. For example, to display the first element in the $a array, type:PowerShell Copy $a[0] Output Copy 0 To display the third element in the $a array, type:...
When an object isn't an indexed collection, using the index operator to access the first element returns the object itself. Index values beyond the first element return$null. PowerShell PS> (2)[0]2PS> (2)[-1]2PS> (2)[1]-eq$nullTrue PS> (2)[0,0]-eq$nullTrue ...
Pipeline logic is applied to the output fromExpressionscript blocks. This means that outputting a single-element array causes that array to be unwrapped. For most cmdlets, errors inside expression script blocks are quietly ignored. ForSort-Object, statement-terminating and script-terminating errors a...
These operators tell whether a set includes a certain element. -contains returns True when the right-hand side (scalar-object) matches one of the elements in the set. -notcontains returns False instead. Examples: PowerShell Copy "abc", "def" -contains "def" # Output: True "abc", "def...
Change the value of an array element in ForEach loop? Changing contents of a text box multiple times in a powershell form Changing email Categories with PowerShell Changing file time Changing Local Group Policy and Local Security Policy via PowerShell Changing nth character for each item of a ...
相反,使用Set-Content,Add-Content和Out-File这几条命令,而不使用重定向,可以有效地规避前面的风险。这三条命令都支持-encoding参数,你可以用它来选择字符集。 创建新驱动器 你可能会惊讶,PowerShell允许你创建新的驱动器。并且不会限制你只创建基于网络的驱动器。你还可以使用驱动器作为你的文件系统中重要目录,...
The following command takes the ErrorRecord object associated with the most recent error in the error array, element 0, and formats the properties of object in a list. PowerShell Copy $Error[0] | Format-List -Property * -Force Output Copy PSMessageDetails : Exception : System.Man...
Creates or changes an alias (alternate name) for a cmdlet or command element. Get-AuthenticodeSignature Gets information about the Authenticode signature in a file. Set-AuthenticodeSignature Adds an Authenticode signature to a Windows PowerShell script or other file. Get-ChildItem Gets the items and...