运行if语句时,PowerShell 会将<test1>条件表达式计算为 true 或 false。 如果<test1>为 true,<statement list 1>则运行,PowerShell 退出 语句if。 如果<test1>为 false,则 PowerShell 将计算条件语句指定的<test2>条件。 有关布尔计算的详细信息,请参阅about_Booleans。
The if() statement highlights what I said in my previous post which is that the value held in the string, $Stat, is not implicitly converted to its Boolean equivalent. Rather, PowerShell sees some random old string and performs an existence - or "not null" - check. So...
The if statement allows you to specify an action for not only when the statement is $true, but also for when it's $false. This is where the else statement comes into play. else The else statement is always the last part of the if statement when used. PowerShell Copy if ( Test-Pat...
I am getting below error Try statement is missing its catch or Finally block, WHile i am running my script to install application after checking domain I am having a problem importing a csv file into Powershell v3. I can't save my PowerShell Scripts to local drive I can't seem to use...
dynamicparam {<statement-list>}在语句列表中,使用 if 语句指定函数中提供参数的条件。以下示例显示了一个函数,其标准参数名为 Name 和Path,并具有一个名为 KeyCount的可选动态参数。 KeyCount 参数位于 ByRegistryPath 参数集中,其类型为 Int32。 仅当 Path 参数的值以 Get-Sample开头时,KeyCount...
Beginning in PowerShell 7.2, when the left-hand operand in a -replace operator statement isn't a string, that operand is converted to a string. PowerShell does a culture-insensitive string conversion. For example, if your culture is set to French (fr), the culture-sensitive string con...
match, theGet-ChildItemcommand returns nothing and assigns nothing to$textFiles, which is considered$falsein a boolean context. If one or moreFileInfoobjects are assigned to$textFiles, the conditional evaluates to$true. You can work with the value of$textFilesin the body of theifstatement. ...
param($ComputerName= $(throw"ComputerName parameter is required."))functionCanPing {$Error.Clear()$tmp=Test-Connection$ComputerName-ErrorActionSilentlyContinueif(!$?) {Write-Host"Ping failed:$ComputerName.";return$false}else{Write-Host"Ping succeeded:$ComputerName";return$true} }functionCanRemote...
windows、powershell、function、if-statement 期望的结果是,如果我键入aconda,conda环境启动,aconda -d将取消conda并更改路径,aconda -a将激活conda并更改路径。是否有一种方法来指定无参数的结果? } -d deactivate con 浏览9提问于2022-05-01得票数 0 1回答 Conda新env在mac中使用非conda python python、python...
null coalescing operator removes the need forifandelsestatements if you want to get the value of a statement if it’s not $null or return something else if it is $null. Note that this doesn’t replace the check for a boolean value of true or false, it’s only checking if the ...