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-orallows for you to specify two expressions and returns$trueif either one of them is$true. PowerShell if($age-le13-or$age-ge55) Just like with the-andoperator, the evaluation happens from left to right. Except that if the first part is$true, then the whole statement is$trueand ...
compare two strings in if-then-else statement Compare two text files in Powershell and if a name is found in both files output content from file 2 to a 3rd text file Compare-Object : Cannot bind argument to parameter 'ReferenceObject' because it is null. Comparing 2 software versions to ...
("DisplayName") # for each value which is not blank if ($null -ne $value -and $value -ne ""){ # The below if statement looks through the values discovered above in the uninstall Registry location and only for the programs defined in the variables above $DisplayVersion = $Read...
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 ...
If this function is run using the pipeline, it displays the following results: PowerShell Copy 1, 2, 4 | Get-PipelineBeginEnd Output Copy Begin: The input is End: The input is 1 2 4 When the begin statement runs, the function doesn't have the input from the pipeline. The end...
1. What is the primary purpose of an if-else statement in PowerShell? A. To define functions B. To perform conditional operations C. To iterate over collections D. To handle errors Show Answer 2. Which keyword is used to start an if statement in PowerShell? A. when B. if ...
Consequently, it will contain the previously set value, or $null if the variable hasn't been set. When referencing $Matches after invoking one of these operators, consider verifying that the variable was set by the current operator invocation using a condition statement. Example: PowerShell ...