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...
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。
This still works correctly in anifstatement. So a value is returned by your operator, then the whole statement is$true. PowerShell $array=1..6if($array-gt3) {# do something} There's one small trap hiding in the details here that I need to point out. When using the-neoperator this...
# This expression returns true if the pattern matches big, bog, or bug. 'big' -match 'b[iou]g' 如果要比對的字元清單包含連字元字元 (-),它必須位於清單的開頭或結尾,才能與字元範圍表達式區別。字元範圍模式也可以是字元範圍。 這些字元可以是字母 [A-Z]、數位 [0-9],或甚至...
<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) 值。 PowerShell 逻辑运算符仅计算确定语句真实值所需的语句。 如果包含 和 运算符的语句中的左操作数为 FALSE,则不计算右操作数。 如果包含 或 语句的语句中的左操作数为 TRU...
<cmdlet> | Where-Object -Property <property_name> <operator> <filter> Here’s a real-world example that is probably a bit easier to follow: Get-Process|Where-Object-Property Name-eq‘Notepad’ In this example, you can really start to see the structure of the command. It begins with the...
Operation statement. You can also write an operation statement, which is much more like natural language. You can use the operation statement to specify a property value or call a method. Operation statements were introduced in Windows PowerShell 3.0. ...
If you have a tip you’d like us to share or a question about how to do something, let us know. Find more tips in the Windows PowerShell Tip of the Week archive. More Fun with Dates (and Times) What’s that? Do we know anything about the Windows PowerShell cmdlet Get-Date?
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. ...
Explains how to use splatting to pass parameters to commands in Windows PowerShell. about_Split Describes theSplitoperator, which splits strings into substrings. about_Switch Explains how to use a switch statement to replace multipleIfstatements. ...