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。
We can use normal PowerShell inside the condition statement. PowerShell Copy if ( Test-Path -Path $Path ) Test-Path returns $true or $false when it executes. This also applies to commands that return other values. PowerShell Copy if ( Get-Process Notepad* ) It evaluates to $true...
Check if a text file is blank in powershell check if computer exist in ou Check if drive exists, If not map Check if Email address exists in Office 365 and if exists, Create a Unique Email address Check if event log source exists for non admins Check if file created today and not 0...
<statement> {-and | -or | -xor} <statement> {! | -not} <statement> 使用逻辑运算符的语句返回布尔值(TRUE 或 FALSE)。 PowerShell 逻辑运算符只计算确定语句的事实值所需的语句。 如果包含 and 运算符的语句中的左操作数为 FALSE,则不会计算右操作数。 如果包含 or 语句的语句中的左操作数为 TRUE...
The-oroperator returns true if at least one condition is true, while the-andoperator returns true only if all conditions are true. How can I check for multiple conditions using the or operator? You can chain multiple conditions using the or operator within an if statement, allowing you to ev...
I can then use a if statement/block to test: $value = 4 if(isInt($value) -eq $true){ write-output "Valid" }else{ write-output "Invalid" } This correctly outputs “Valid”. If I change $value to a non-integer, it correctly outputs “Invalid” when I run the above code. ...
fails then the second stage is ElseIf statement. InElseIfblock you can also specify your conditions or test values. If the above two conditions fail then the last block is Else, which doesn’t require any condition to check and it will be directly executed when If and ElseIf statement ...
When thebeginstatement runs, the function doesn't have the input from the pipeline. Theendstatement runs after the function has the values. If the function has aprocesskeyword, each object in$inputis removed from$inputand assigned to$_. The following example has aprocessstatement list: ...
Here’s a quick tip on working with Windows PowerShell. These are published every week for as long as we can come up with new tips. If you have a tip you’d like us to share or a question about how to do something,let us know. ...
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. ...