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This article mainly introduces what PowerShell is in Win Server2008 R2. It is very detailed and has certain reference value. Friends who are interested must finish it.

Windows PowerShell is a Windows command line Shell specially designed for system administrators, including an interactive DOS-style command line window and a scripting environment that can be applied independently or jointly. Unlike most Shell that receive and send text messages, Windows PowerShell is based on .NET common language runtime and .NET Framework, receiving and replying to .NET objects. This feature provides new tools and methods for the management and configuration of Windows.

PowerShell

An important concept in Windows PowerShell is "cmdlet", a simple, single-function command-line tool built on Shell. Users can use the commands independently, but their role depends on the task and environment of the application. Windows PowerShell contains more than 100 basic command lines, and users can write their own command lines and share them with other users.

Like most Shell, Windows PowerShell gives you access to your computer's file system. In addition, Windows PowerShell gives you access to other stored data, such as the registry and digitally signed certificates, as simple as accessing the file system.

PowerShell in Windows Server 2008 R2 has been upgraded to 2.0, introducing many new features, such as remote management, a complete scripting environment, Debug tools, and so on. Let's take a closer look at ISE and new features that enhance remote capabilities in PowerShell V2.

1. Integrated scripting environment ISE (Integrated Script Environment)

One of the basic requirements for PowerShell is the ability to easily write and debug PowerShell scripts. PowerShell v2 bundles an integrated scripting environment ISE (Integrated Script Environment) to make it easier to write PowerShell scripts. ISE includes a script panel, an output panel, and a command line panel.

ISE panel

The ISE command line panel is very similar to the PowerShell command line panel, where users can type commands and execute them by entering enter. The execution result of the command is displayed in the output panel, and the results of all previous command execution can be clearly tracked. The script panel at the top can be used to write and debug scripts, and the script panel supports multiple scripts to operate together, making it easy to operate.

To help users debug scripts, ISE allows users to set debug breakpoints (breakpoint) in a variety of ways, either manually or automatically under special conditions, which provide a better experience. In the command to set the breakpoint, you need to specify the name and coordinates of the debugging script.

Set-PSBreakpoint.\ [Script-File-Name] .ps1-line X

If you want to set multiple breakpoints, you need to specify coordinates separated by commas, such as

Set-PSBreakpoint.\ [Script-File-Name] .ps1-line XMagi YMagnez

If you want to set a breakpoint when calling a specific function, you need to use the Set-PSBreakpoint command, the-Command argument, and the function name:

Set-PSBreakPoint-Command [Name-Of-Function]

ISE's debugger can also set a breakpoint when reading or writing a specific variable. Here is the command to set a breakpoint when reading and writing a variable:

Set-PSBreakpoint-Variable [Variable-Name]-mode readSet-PSBreakpoint-Variable [Variable-Name]-mode write

After the breakpoint is set, it has an identifier of *. You can delete the breakpoint by deleting the identifier through the Disable-PSBreakpoint command:

Disable-PSBreakpoint X

II. Remote function enhancement of PowerShell v2

Another important feature of PowerShell v2 is the enhancement of remote operation capability (PowerSell remoting), with the addition of a new command line Invoke-Command. It is important to note that PowerSell remoting currently supports only computers running Vista SP1, Windows Server 2008, and Windows 7, and requires that the appropriate version of the remote administration tool WinRM be installed. This means that users can only install Vista SP1/Win 2008 computers with PowerShell v2 and WinRM over a PowerShell remoting connection, and do not support computers with Vista (only PowerShell) and WinXP systems.

PowerShell v2 system requirements and improvements

In the CTP pre-release version of PowerShell 2.0, the Invoke-Expression command is used to connect to remote computers:

Invoke-Expression-computerName atl-fs-001-command Get-Process

If you want to run the Get-Process command on the remote computer atl-fs-001, you can use the new Invoke-Command command:

Invoke-Command-computerName atl-fs-001-scriptblock

You can see that the basic parameters in the two commands are the same. The PowerShell team replaced the Invoke-Expression command with Invoke-Command and the-command parameter with the-scriptblock parameter. Although there are not many changes in the command, it improves the stability, security, and performance of remote operations.

Of course, this command can also support multiple remote computers, and if you need to get process information from remote computers atl-fs-001, atl-fs-002, and atl-fs-003, you can use the command:

Invoke-Command-computerName atl-fs-001, atl-fs-002, atl-fs-003-scriptblock

Support for multiple remote computers

Like the Invoke-Expression command, Invoke-Command can connect to a remote computer and run the command, but lose the connection immediately. If you need a persistent connection to the remote computer, you can create a PowerShell session with the command:

$objRunspace = New-Runspace atl-fs-001, atl-fs-002, atl-fs-003

If you need more information about the Invoke-Command command, you can get instructions and examples with the following command:

Get-Help Invoke-Command-full | the above more is all the contents of the article "what is PowerShell in Win Server2008 R2". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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