If statement based on day of the week evaluating despite being false If Test-Connection do these action else exit. If variable is null or empty skip in script If with multiple conditions If/then statement in Powershell Ignore open files when running compress-archive ignore warning in powershell...
if (statement1) { # 执行语句1 } elseif (statement2) { # 执行语句2 } else { # 执行其他操作 } 在这个例子中,statement1和statement2是两个逻辑表达式,可以是任何返回布尔值的表达式。根据这两个语句的结果,程序将执行相应的代码块。 以下是对问题中提到的一些关键术语和概念的解释: 前端开发:前端开发涉...
如果 <test1> 和<test2> 的计算结果为 false,则 <statement list 3> 代码块将运行,并且 PowerShell 将退出 if 语句。 可以使用多个 elseif 语句链接一系列条件测试。 仅当以前的所有测试均为 false 时,才会运行每个测试。 如果需要创建包含许多 elseif 语句的 if 语句,请考虑改用 Switch 语句。 示例: 最...
$a = "Powershell" IF ($a -eq "PowerShell"){ "Statement is True"} ELSE { "Statement is False"}Now if you want to check for a NULL then it gets fun$b = “Hello” IF ($b -eq $NULL) { "B is NULL" } ELSE { "B is NOT NULL" }...
Ternary operator? <if-true> : <if-false> You can use the ternary operator as a replacement for theif-elsestatement in simple conditional cases. For more information, seeabout_If. Null-coalescing operator?? The null-coalescing operator??returns the value of its left-hand operand if it isn'...
else往往都是配合if来使用的，像这样： a = '12'if a == '123': print(a)else: print...
If-Else/Do-While/Switch/For/While都和普通编程语言无异 ForEach Foreach($<item> in $<collection>) { Statement-1 Statement-2 Statement-N } 函数 常规函数 function[<scope:>]<name>[([type]$parameter1[,[type]$parameter2])]{param([type]$parameter1[,[type]$parameter2])dynamicparam{<stateme...
In this statement, I’ve declared three parameters: computername is a single string or an array of strings. It is mandatory, and it accepts string pipeline input—meaning if you pipe in a bunch of strings, they’ll be automatically dropped into the $computername variable. ...
else had signed it, my public key wouldn't be able to decrypt the signature. Once the signature is decrypted, Windows PowerShell compares the script to the copy that had been encrypted into the signature. If they match, then the signature is considered intact. If the two scripts differ, ...
It is equivalent to an else clause in an if statement. Only one default clause is permitted in each switch statement.switch has the following parameters:Wildcard - Indicates that the condition is a wildcard string. If the match clause is not a string, the parameter is ignored. The ...