<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...
# This statement returns true because book contains the string "oo" 'book' -match 'oo' 字元類別雖然字元常值可運作,但如果您知道確切的模式,字元類別可讓您較不明確。字元群組[character group] 可讓您一次比對任意數目的字元,而 [^character group] 只比對群組中的字元 NOT。PowerShell...
PowerShell 7.0 introduced a new syntax using the ternary operator. It follows the C# ternary operator syntax: Syntax Copy <condition> ? <if-true> : <if-false> The ternary operator behaves like the simplified if-else statement. The <condition> expression is evaluated and the result is conv...
PowerShell コピー if ( -not ( Test-Path -Path $path ) ) 説明してきたほとんどの演算子には、-not 演算子を使用する必要がないバリエーションがあります。 しかし、それでも役に立つ場面があります。! operator-not の別名として ! を使用できます。
Invoke-Sqlcmd takes a query in text form and sends it to SQL Server for processing. The results are returned in object form and standard PowerShell functions can be used to manipulate the data as necessary. It takes either a standard Transact-SQL query or an XQuery statement as input. Invo...
Explains how to create, use, and sort hash tables in Windows PowerShell. about_History Explains how to get and run commands from the command history. about_If Describes theIfstatement, which establishes conditions for an action. about_InlineScript ...
You can also use this technique In the context of a conditional statement, such as theifstatement. PowerShell if($textFiles=Get-ChildItem*.txt) {$textFiles.Count } In this example, if no files match, theGet-ChildItemcommand returns nothing and assigns nothing to$textFiles, which is consider...
You can also use the PowerShell Not Equal operator inside the conditional statements, such as the if/else statement. Related:Back to Basics: Conditional Logic with PowerShell If-Else For example, a service must be running in most cases if its StartType value is Automatic. The script below ge...
Windows PowerShell Tip: Using the Switch Statement Windows PowerShell Tip: Working With Custom Objects Windows PowerShell Tip: Working With SIDs Windows PowerShell Tip: Working With Security Descriptors Working with Hash Tables Accessing WMI from Windows PowerShell ...
Notice the type conversion when assigning theNumberproperty. As long as the number is in range of an integer, this will always succeed, since we have made a successful match in the if statement above. ([long]or[bigint]could be used. In this case I provide the input, and I have promis...