What type of object does the Get-Process cmdlet produce? How do you determine what the available properties are for a command? What should you check for if a command exists to get something but not to set the same thing? How can some commands that don't return output by default be made...
在 中使用 ForEach-Object -Parallel PowerShell 类是不安全的。类上的方法调用被封送回创建它的 Runspace ,这可能会损坏 Runspace 的状态或导致死锁。 有关运行空间相关性如何导致错误的插图,请参阅 示例4。 使用类型加速器导出类 默认情况下,PowerShell 模块不会自动导出 PowerShell 中定义的类和枚举。 如果不...
If the property value of an object is an array, PowerShell uses reference equality to determine a match. Where-Object returns the object only if the value of the Property parameter and any value of Value are the same instance of an object. This parameter was introduced in Windows PowerShell...
Beginning in PowerShell 3.0, by default, Get-Command gets only the commands that run when you type the command name. In the following examples, the session includes a Get-Date function and a Get-Date cmdlet. You can use Get-Command to determine which command is chosen first. Get-Command ...
such asBooleanorString. PowerShell attempts to determine the object type from the expression. The object type depends on the type of parameter a command expects and on whether PowerShell knows how to convert the argument to the correct type. The following table shows several examples of the ty...
Type comparison operators (-is,-isnot) determine whether an object is of a given type. For more information, seeabout_Comparison_Operators. Logical Operators Use logical operators (-and,-or,-xor,-not,!) to connect conditional statements into a single complex conditional. For example, you can...
This shows the limitations of a regex. While the formatting of this string looks like an IP address, it obviously isn't a valid IP address. A regex can't determine whether data is actually valid; it can only determine whether the data looks right. ...
There is another issue to consider: How do I determine what is unique in dealing with processes? Do I want unique process names, unique process IDs, unique memory consumption, unique executable paths, or what? The System.Diagnostics.Process .NET Framework object contains 51 properties—any one ...
5.Determine the Status of the Last Command $lastExitCode Anumber that represents the exit code/error level of the last script or application that exited $? (pronounced “dollar hook”) A Boolean value that represents the success or failure of the last command ...
It’s difficult to determine, isn’t it? That’s because this function displays an all-too-common fault of scripts and examples you’ll find on the Internet, and in many of your own folders. It doesn’t use whitespace. Now consider this revised example:...