if語句不僅允許您在語句為$true時指定動作,也允許您在語句為$false時指定動作。 這就是else語句發揮作用的地方。 否則 使用時,else語句一律是if語句的最後一個部分。 PowerShell if(Test-Path-Path$Path-PathTypeLeaf ) {Move-Item-Path$Path-Destination$archivePath}else{Write-Warning"$pathdoesn't exist or...
if语句最常见的用法是比较两个项。 PowerShell 具有特殊运算符,可用于不同的比较方案。 当使用比较运算符时,会将左右两侧的值进行比较。 -eq(等于) -eq在两个值之间执行相等检查,以确保它们彼此相等。 PowerShell $value=Get-MysteryValueif(5-eq$value) {# do something} ...
That’s right; we’ll get back False. That’s because there’s no array item namedviolet. Thereisan item namedViolet Beauregard, but that’s obviously not the same item. A (Case-) Sensitive Subject Like most (if not all) Windows PowerShell operators, you can also perform case-sensitive...
if([System.Linq.Enumerable]::Contains($array,$item)){ "The array contains the item." }else{ "The item is not in the array." } This method returns $true if the element is found in array.LINQ queries are known for their performance and are particularly useful for large data sets. It...
-in 演算子は、右側にコレクションがあること以外は、-contains 演算子とまったく同じです。 PowerShell コピー $array = 1..6 if ( 3 -in $array ) { # do something } バリエーション: -in (大文字と小文字が区別されない一致) -iin (大文字と小文字が区別されない一致) -cin (大...
powershell具有在硬盘中易绕过，内存中难查杀的特点。一般在后渗透中，攻击者可以在计算机上执行代码时，...
True True Object[] System.Array $item为一个对象数组 动态和静态类型 一般对PowerShell变量重新赋值时,变量类型会自动改变,这体现了动态语言的特点; 而同样使用.NET 的C#却是静态强类型的语言,既然很像C#因此PowerShell也可以使用静态类型,静态类型带来的严谨性能避免不必要的错误。
A PowerShell array is a component that enables the storage of more than one item in a variable or a field. For instance, to assign multiple values to a variable, use the script$a=1,2,3. PowerShell treats each item in an array as a separate element. To address each item in an arra...
To begin with, let’s see if we can remove a specified item from our array. With the standard Windows PowerShell array class that’s a difficult proposition, at best; as the Windows PowerShell help documentation states: It is not easy to delete elements from an array, but you can create...
If the test value is a collection, such as an array, each item in the collection is evaluated in the order in which it appears. The following examples evaluates 4 and then 2.PowerShell Copiere switch (4, 2) { 1 {"It is one." } 2 {"It is two." } 3 {"It is three." } ...