<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...
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...
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。
filter [<scope:>]<name> {<statement list>} 下列篩選會從管線取得記錄專案,然後顯示整個專案或只顯示專案的訊息部分: PowerShell 複製 filter Get-ErrorLog ([switch]$Message) { if ($Message) { Out-Host -InputObject $_.Message } else { $_ } } 可用方式如下: PowerShell 複製 Get-WinEven...
The function is created on the PowerShell command line. TheFunctioncommand uses the nameSearch-Help. PressEnterto begin adding statements to the function. From the>>prompt, add each statement and pressEnteras shown in the example. After the closing bracket is added, you're returned to a Powe...
catch [[<error type>][','<error type>]*] {<statement list>} 错误类型用括号括起来显示。 最外部的括号表示元素是可选的。 catch关键字后跟错误类型规范和语句列表的可选列表。 如果在try块中出现终止错误,PowerShell 将搜索相应的catch块。 如果找到一个块,则执行catch块中的语句。
and it can be found in many other places. The upside of a self-signed certificate is that it's free and doesn't require any infrastructure. The downside, however, is that it's really only usable on your computer. But if you just need to enable script execution on your computer—for ...
function is GetAllClasses, which calls GetADSchema and passes the word "classes". When the Switch statement in the GetADSchema function matches the string "classes", it calls the FindAllClasses method from the ActiveDirectorySchema class. Here is the code called by the Switch statement: ...
To save you from typing repetitive or long text (or hunting for the script to copy-and-paste from) To save you a trip to Get-Help (think about all the attributes on script cmdlets) Beginners may insert an if statement as a means of learning PowerShell syntax ...
null coalescing operator removes the need forifandelsestatements if you want to get the value of a statement if it’s not $null or return something else if it is $null. Note that this doesn’t replace the check for a boolean value of true or false, it’s only checking if the ...