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。
3. The PowerShell Not Equal operator is not case-sensitive. As you can see in the previous step, “Hello” is equal to “hello”. But if you require case sensitivity when comparing string values, substitute the -ne operator with -cne operator, which meansCase Sensitive Not Equal. "Hello"...
-ne not equal Many operators have a related operator that is checking for the opposite result.-neverifies that the values don't equal each other. PowerShell if(5-ne$value) {# do something} Use this to make sure that the action only executes if the value isn't5. A good use-cases whe...
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 conditions If/then statement in Powershell Ignore open files when running compress-archive ignore warning in powershel...
The if() statement highlights what I said in my previous post which is that the value held in the string, $Stat, is not implicitly converted to its Boolean equivalent. Rather, PowerShell sees some random old string and performs an existence - or "not null" - check. ...
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match, theGet-ChildItemcommand returns nothing and assigns nothing to$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. ...
In this statement, I’ve declared three parameters: computername is a single string or an array of strings. It is mandatory, and it accepts string pipeline input—meaning if you pipe in a bunch of strings, they’ll be automatically dropped into the $computername variable. ...
If statement based on day of the week evaluating despite being false If Test-Connection do these action else exit. If variable is null or empty skip in script If with multiple conditions If/then statement in Powershell Ignore open files when running compress-archive ignore warning in powershell...
-ne not equal to -like like wildcard pattern matching -and logical and -or logical or Table 1: PowerShell Comparison Operators Flow control is then handled using this set of commands: Expand table Control Example Code If if ($val -eq "target") { #work } For For ($i=0; $i -lt...