This article lists common terms used to talk about PowerShell.
B binary moduleA PowerShell module whose root module is a binary (.dll
) file. A binary module may or may not include a module manifest.
A parameter that's added to all cmdlets, advanced functions, and workflows by the PowerShell engine.
D dot sourceIn PowerShell, to start a command by typing a dot and a space before the command. Commands that are dot sourced run in the current scope instead of in a new scope. Any variables, aliases, functions, or drives that command creates are created in the current scope and are available to users when the command is completed.
dynamic moduleA module that exists only in memory. The New-Module
and Import-PSSession
cmdlets create dynamic modules.
A parameter that's added to a PowerShell cmdlet, function, or script under certain conditions. Cmdlets, functions, providers, and scripts can add dynamic parameters.
F format fileA PowerShell XML file that has the .format.ps1xml
extension and that defines how PowerShell displays an object based on its .NET Framework type.
The session state that contains the data that's accessible to the user of a PowerShell session.
H HostThe interface that the PowerShell engine uses to communicate with the user. For example, the host specifies how prompts are handled between PowerShell and the user.
host applicationA program that loads the PowerShell engine into its process and uses it to perform operations.
I input processing methodA method that a cmdlet can use to process the records it receives as input. The input processing methods include the BeginProcessing
method, the ProcessRecord
method, the EndProcessing
method, and the StopProcessing
method.
A PowerShell module that has a manifest and whose RootModule key is empty.
member-access enumerationA PowerShell convenience feature to automatically enumerate items in a collection when using the member-access operator (.
).
A self-contained reusable unit that allows you to partition, organize, and abstract your PowerShell code. A module can contain cmdlets, providers, functions, variables, and other types of resources that can be imported as a single unit.
module manifestA PowerShell data file (.psd1
) that describes the contents of a module and that controls how a module is processed.
The session state that contains the public and private data of a PowerShell module. The private data in this session state isn't available to the user of a PowerShell session.
N non-terminating errorAn error that doesn't stop PowerShell from continuing to process the command. See also, terminating error.
nounThe word that follows the hyphen in a PowerShell cmdlet name. The noun describes the resources upon which the cmdlet acts.
P parameter setA group of parameters that can be used in the same command to perform a specific action.
pipeIn PowerShell, to send the results of the preceding command as input to the next command in the pipeline.
pipelineA series of commands connected by pipeline operators (|
). Each pipeline operator sends the results of the preceding command as input to the next command.
A single command that participates in the pipeline semantics of PowerShell. This includes binary (C#) cmdlets, advanced script functions, CDXML, and Workflows.
PowerShell commandThe elements in a pipeline that cause an action to be carried out. PowerShell commands are either typed at the keyboard or invoked programmatically.
PowerShell data fileA text file that has the .psd1
file extension. PowerShell uses data files for various purposes such as storing module manifest data and storing translated strings for script internationalization.
A virtual drive that provides direct access to a data store. It can be defined by a PowerShell provider or created at the command line. Drives created at the command line are session-specific drives and are lost when the session is closed.
providerA Microsoft .NET Framework-based program that makes the data in a specialized data store available in PowerShell so that you can view and manage it.
PSSessionA type of PowerShell session that's created, managed, and closed by the user.
R root moduleThe module specified in the RootModule key in a module manifest.
runspaceIn PowerShell, the operating environment in which each command in a pipeline is executed.
S scalar valueIn PowerShell, a scalar value is any value type that is not enumerable. This includes the .NET primitive types, such as booleans and numbers, and other value types such as String, DateTime and Guid.
For a list of .NET primitive types, see the Remarks section of System.Type.IsPrimitive Property.
script blockIn the PowerShell programming language, a collection of statements or expressions that can be used as a single unit. A script block can accept arguments and return values.
script fileA file that has the .ps1
extension and contains a script written in the PowerShell language.
A PowerShell module whose root module is a script module (.psm1
) file. A script module may include a module manifest. The script defines the members that the script module exports.
The command interpreter that's used to pass commands to the operating system.
switch parameterA parameter that doesn't take an argument. The value of a switch parameter defaults to $false
. When a switch parameter is used, its value becomes $true
.
An error that stops PowerShell from processing the command. See also, non-terminating error.
transactionAn atomic unit of work. The work in a transaction must be completed as a whole. If any part of the transaction fails, the entire transaction fails.
type fileA PowerShell XML file that has the .types.ps1xml
extension and that extends the properties of Microsoft .NET Framework types in PowerShell.
The word that precedes the hyphen in a PowerShell cmdlet name. The verb describes the action that the cmdlet performs.
W Windows PowerShell ISEThe Integrated Scripting Environment (ISE) - A Windows PowerShell host application that enables you to run commands and to write, test, and debug scripts in a friendly, syntax-colored, Unicode-compliant environment.
Windows PowerShell snap-inA resource that defines a set of cmdlets, providers, and Microsoft .NET Framework types that can be added to the Windows PowerShell environment. PowerShell snap-ins have been replaced by modules.
Windows PowerShell WorkflowA workflow is a sequence of programmed, connected steps that perform long-running tasks or require the coordination of multiple steps across multiple devices or managed nodes. Windows PowerShell Workflow lets IT pros and developers author sequences of multi-device management activities, or single tasks within a workflow, as workflows. Windows PowerShell Workflow lets you adapt and run both PowerShell scripts and XAML files as workflows. Windows PowerShell Workflow is built on the Windows Workflow Foundation, which has been deprecated.
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