Windows PowerShell Core About Topics

Article
06/16/2016

Applies To: Windows PowerShell 2.0, Windows PowerShell 3.0, Windows PowerShell 4.0, Windows PowerShell 5.0

This section contains the conceptual ("About") help topics that apply to all Windows PowerShell modules. For the About topics for other modules, see the help topics for the particular module.

Topic	Description
about_Aliases	Describes alternate names for cmdlets and commands in Windows PowerShell.
about_Arithmetic_Operators	Describes the operators that perform arithmetic in Windows PowerShell.
about_Arrays	Describes arrays; a compact data structure for storing data elements.
about_Assignment_Operators	Describes the operators that assign values to variables.
about_Automatic_Variables	Describes the automatic variables, which that store state information for Windows PowerShell.
about_Break	Explains how to use the Break statement, a statement that immediately exits Foreach, For, While, Do, and Switch statements.
about_Checkpoint-Workflow	Describes that Checkpoint-Workflow activity, which takes a checkpoint in a workflow.
about_Command_Precedence	Describes how Windows PowerShell determines which command to run.
about_Command_Syntax	Explains the command format in Windows PowerShell.
about_Comment_Based_Help	Explains how to write comment-based help topics for functions and scripts.
about_CommonParameters	Describes parameters that can be used with any cmdlet.
about_Comparison_Operators	Describes the operators that compare values in Windows PowerShell.
about_Continue	Describes the Continue statement, which immediately returns to top of a program loop.
about_Core_Commands	Lists the cmdlets designed for use with Windows PowerShell providers.
about_Data_Sections	Describes the Data section of scripts, which is designed to isolate data from code logic.
about_DesiredStateConfiguration	Describes the Windows PowerShell Desired State Configuration feature, which helps ensure consistent configuration across multiple remote, managed nodes.
about_Debuggers	Describes the Windows PowerShell script debugger, a set of cmdlets for debugging scripts and functions.
about_Do	Describes the Do statement, which runs a script block one or more times subject to a While or Until condition.
about_Environment_Variables	Explains how to access Windows environment variables in Windows PowerShell.
about_Escape_Characters	Introduces the escape character in Windows PowerShell (`) and explains its effect.
about_Eventlogs	Describes the Windows PowerShell event log in Event Viewer.
about_Execution_Policies	Describes the Windows PowerShell execution policies and explains how to manage them.
about_For	Describes the For loop in Windows PowerShell.
about_ForEach	Describes the ForEach statement, a statement that acts on each item in a collection.
about_Format.ps1xml	Describes the Format.ps1xml files that define the default display of objects in the console.
about_Functions	Explains how to create and use functions in Windows PowerShell.
about_Functions_Advanced	Introduction to advanced functions; the functions that act like cmdlets.
about_Functions_Advanced_Methods	Explains how to use the methods and properties that are available to cmdlets in advanced functions.
about_Functions_Advanced_Parameters	Shows how to declare parameters for advanced functions.
about_Functions_CmdletBindingAttribute	Describes the CmdletBinding attribute, which identifies a function that works like a cmdlet.
about_Functions_OutputTypeAttribute	Describes an attribute that reports the type of object that the function returns.
about_Group_Policy_Settings	Describes the Group Policy settings for Windows PowerShell.
about_Hash_Tables	Explains how to create, use, and sort hash tables in Windows PowerShell.
about_History	Explains how to get and run commands from the command history.
about_If	Describes the If statement, which establishes conditions for an action.
about_InlineScript	Describes the InlineScript workflow activity.
about_Jobs	Describes Windows PowerShell background jobs.
about_Job_Details	Provides detailed information about background jobs.
about_Join	Describes the Join operator, which combines multiple strings into a single string.
about_Language_Keywords	Describes the keywords in the Windows PowerShell scripting language.
about_Line_Editing	Describes the editing features of the Windows PowerShell console.
about_Locations	Explains how to use the working location in Windows PowerShell.
about_Logical_Operators	Describes the operators that connect statements in Windows PowerShell.
about_Methods	Explains how to use methods to perform actions on objects in Windows PowerShell.
about_Modules	Explains how to install, import, and use Windows PowerShell modules.
about_Objects	Explains how to work with objects in Windows PowerShell.
about_Object_Creation	Explains how to create objects in Windows PowerShell.
about_Operators	The overview topic that describes operators in Windows PowerShell. Contains topics about each operator type.
about_Operator_Precedence	Lists the Windows PowerShell operators in precedence order.
about_Parameters	Explains how to working with cmdlet parameters in Windows PowerShell.
about_Parameters_Default_Values	Explains how to set custom default values for the parameters of cmdlets and advanced functions.
about_Parsing	Explains how Windows PowerShell parses commands.
about_Path_Syntax	Describes full and relative path name formats in Windows PowerShell.
about_Pipelines	Explains how to combine commands into pipelines in Windows PowerShell.
about_PowerShell.exe	Displays help for the PowerShell.exe command-line tool.
about_PowerShell_Ise.exe	Displays help for the PowerShell_ISE.exe command-line tool.
about_Preference_Variables	Describes the preference variables that customize Windows PowerShell.
about_Profiles	Explains how to create and use a Windows PowerShell profile.
about_Prompts	Explains how to create and use a Windows PowerShell profile.
about_Properties	Explains how to use object properties in Windows PowerShell.
about_Providers	Describes the Windows PowerShell providers and explains how to use the data that they expose.
about_PSSessions	Describes Windows PowerShell sessions (PSSessions) and explains how to use them to run remote commands.
about_PSSession_Details	Provides detailed information about Windows PowerShell sessions.
about_PSSnapins	Describes Windows PowerShell snap-ins and explains how to use them to extend Windows PowerShell.
about_Quoting_Rules	Explains the rules for using single and double quotation marks in Windows PowerShell, including here-strings.
about_Redirection	Explains how to redirect output to variables and text files. Includes redirection operators.
about_Ref	Explains how to create and use a reference variable type.
about_Regular_Expressions	Explains how to use regular expressions in Windows PowerShell.
about_Remote	How to run remote commands in Windows PowerShell.
about_Remote_Disconnected_Sessions	Explains how to disconnect from and reconnect to a PSSession.
about_Remote_FAQ	Questions and answers about running remote commands in Windows PowerShell.
about_Remote_Jobs	Explains how to run background jobs on remote computers
about_Remote_Output	Interpreting and formatting the output of remote commands.
about_Remote_Requirements	System requirements and configuration requirements for running remote commands in Windows PowerShell.
about_Remote_Troubleshooting	Troubleshooting remote operations in Windows PowerShell.
about_Remote_Variables	Explains how to use local and remote variables in remote commands.
about_Requires	Describes the Requires statement, which prevents a script from running without required snap-ins and versions.
about_Reserved_Words	Lists words that are reserved to Windows PowerShell.
about_Return	Exits the current scope, which can be a function, script, or script block.
about_Run_With_PowerShell	Explains how to use the "Run with PowerShell" feature to run a script by right-clicking its entry in File Explorer.
about_Scheduled_Jobs	Describes scheduled jobs and explains how to use and manage scheduled jobs in Windows PowerShell and in Task Scheduler.
about_Scheduled_Jobs_Basics	Explains how to create and manage scheduled jobs.
about_Scheduled_Jobs_Advanced	Explains advanced scheduled job topics, including the file structure that underlies scheduled jobs.
about_Scheduled_Jobs_Troubleshooting	Explains how to resolve problems in scheduled jobs.
about_Scopes	Explains how to set and change the scope of functions and variables in Windows PowerShell.
about_Script_Blocks	Explains how to use script blocks to combine expressions, statements and commands into a single code block.
about_Script_Internationalization	Describes the features that make it easy for scripts to display user messages in the language selected for Windows.
about_Scripts	Explains how to write and run scripts in Windows PowerShell.
about_Session_Configurations	Describes session configurations, which determine the users who can connect to the computer remotely and the commands they can run.
about_Session_Configuration_Files	Describes session configuration files, which define the environment of sessions that use the session configuration.
about_Signing	Describes the Windows PowerShell execution policies, explains how to manage them, and explains to how sign scripts so they comply with the execution policies.
about_Special_Characters	Describes the special characters in Windows PowerShell.
about_Splatting	Explains how to use splatting to pass parameters to commands in Windows PowerShell.
about_Split	Describes the Split operator, which splits strings into substrings.
about_Switch	Explains how to use a switch statement to replace multiple If statements.
about_Throw	Describes the Throw keyword, which generates a terminating error.
about_Transactions	Explains how to manage transacted operations in Windows PowerShell.
about_Trap	Describes the Trap keyword, which handles a terminating error.
about_Try_Catch_Finally	Error handling in scripts is done using the Try, Catch, and Finally script blocks.
about_Type_Operators	Describes the operators that work with .NET types.
about_Types.ps1xml	Describes the Types.ps1xml files that let you extend the .NET types of objects used in Windows PowerShell.
about_Updatable_Help	Describes the updatable help system in Windows PowerShell.
about_Variables	An overview topic that explains the types of variables in Windows PowerShell.
about_While	Describes While loops in Windows PowerShell.
about_Wildcards	Explains how to use the wildcard character (*) in Windows PowerShell.
about_Windows_PowerShell_5.0	Describes features and changes that are new to Windows PowerShell 4.0.
about_Windows_PowerShell_ISE	Describes Windows PowerShell® Integrated Scripting Environment (ISE).
about_Workflows	Provides a brief introduction to the Windows PowerShell Workflow feature.
about_WorkflowCommonParameters	Describes the parameters that are valid on all Windows PowerShell workflow commands.
about_WMI	Describes Windows Management Instrumentation (WMI), which is Microsoft’s implementation of the Web-Based Enterprise Management (WBEM) industry standard.
about_WMI_Cmdlets	Provides background information about Windows Management Instrumentation (WMI) and Windows PowerShell.
about_WQL	Describes WMI Query Language (WQL), which can be used to get WMI objects in Windows PowerShell.
about_WS-Management_Cmdlets	Describes the cmdlets in the Microsoft.WsMan.Management module. Explains how to use them together to manage WS-Management features, including the WSMan provider drive.

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