If File exists then copy it script powershell If is not recognized as the name of a cmdlet? if not contains 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 co...
Theifstatement allows you to specify an action for not only when the statement is$true, but also for when it's$false. This is where theelsestatement comes into play. else Theelsestatement is always the last part of theifstatement when used. ...
如果<test2>为 true,则<statement list 2>运行,并且 PowerShell 将退出if语句。 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...
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]$parameter2])dynamicparam{<stateme...
Simple IF, Else$a = "Powershell" IF ($a -eq "PowerShell") { "Statement is True" } ELSE { "Statement is False" }You can condence this to:$a = "Powershell" IF ($a -eq "PowerShell"){ "Statement is True"} ELSE { "Statement is False"}...
似乎所有的条件语句都使用if...else...，它的作用可以简单地概括为非此即彼，满足条件A则执行A的语句，否则执行B语句，python的if...else...功能更加强大，在if和else之间添加数个elif,有更多的条件选择，其表达式如下:
问Powershell foreach和if语句EN今天我们来讲解一下 for跟foreach 一、for 是一个循环语句 for break...
2.2 If statement <ifStatementRule> = ‘if’ ‘(‘ <pipelineRule> ‘)’ <statementBlockRule>[ ‘elseif’ ‘(‘ <pipelineRule> ‘)’ <statementBlockRule> ]* [ ‘else’ <statementBlockRule> ]{0 |1} 2.3 Switch statement # The syntax for a switch statement looks like: ...
Ternary operator? <if-true> : <if-false> You can use the ternary operator as a replacement for theif-elsestatement in simple conditional cases. For more information, seeabout_If. Null-coalescing operator?? The null-coalescing operator??returns the value of its left-hand operand if it isn'...
if ($AllDbAvail) { "ok" } else { "not ok" } 尚未赋值的变量将计算为$null-并且当转换为布尔值时,$null和整数值0将依次计算为{@$false}。 关于你的“第二次测试”,我真的不知道该说什么——它的表现完全符合预期。 您是否尝试指定non-zero值?