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Variable is a container (memory unit) which stores the value. You can store all types of values in Windows PowerShell variables. Variable is typically used to store the result of command and to store elements that are used in commands and expressions, such as names, paths, settings, and values.
You can use the Process cmdlets to manage local and remote processes with PowerShell. To find out all the PowerShell cmdlets that deal with Processes, use the following command.
As a Windows administrator, you might need to deal with Services on regular basis. You mainly need to list the services, to stop them, and sometimes need to change the Startup Mode. PowerShell offers you various cmdlets which can help you deal with Services. But before start managing the Services, you need to run the PowerShell console with administrator privileges since PowerShell does not violate the Windows security policies; it respects the security policies.
The Windows PowerShell Integrated Scripting Environment (ISE) is one of two hosts for the Windows PowerShell engine and language. In Windows PowerShell ISE, you can write, run, test, and debug the scripts in a single Windows-based graphic user interface with multiline editing, tab completion, syntax coloring, selective execution, IntelliSense and context-sensitive help. You can use menu items and keyboard shortcuts to perform many of the same tasks that you would perform in the Windows PowerShell console.
Windows PowerShell is designed especially for system administration. In this section we will discuss some important PowerShell commands every system administrator must know to make their life easier.
When you add aliases, functions, and variables, you are actually adding them only to the current Windows PowerShell session. If you exit the session or close Windows PowerShell, the changes are lost.
If the network connection type is set to Public, enabling PowerShell remoting might fail because by default, PowerShell expects domain or private connection types.
PowerShell Remoting uses the WS-Management protocol and lets you run any PowerShell command on one or more remote computers. It lets you establish persistent connections, start interactive sessions, and run scripts on multiple computers.
You can easily change the color in Write-Host using “-ForegroundColor” parameter but when you tried to use “-ForegroundColor” with Read-Host, it’s not worked and print the “-ForegroundColor” in the Read-Host message as follows:
Some browsers may complain about invalid certificate and block you when you try to visit a regular page even when the site has an SSL certificate installed. Apparently the security of any website depends on whether the certificate is from one of the trusted authorities. We shall see later what a trusted authority means.