PowerShellには、その使い方等を記載したabout_xxxxxファイルがインストール時にセットされます。 今回は、そのaboutファイルのパスと簡単な確認方法についです。
about_xxxxのパス
about_xxxxファイルは、以下のパスに存在します。
#English file path C:\WINDOWS\system32\WindowsPowerShell\V1.0\en-US #日本語ファイルパス C:\WINDOWS\system32\WindowsPowerShell\V1.0\ja-JP
閲覧方法
二つあります。
- 対象のabout_xxxxx.txtファイルを直接開く
- Get-Help about_xxxxxをコンソールから実行
どちらでも好きな方でいいかと思います。 が、前回の記事で紹介した通りPowerShell 3.0からポップアップ表示/検索が可能になったのでエディタで開く必要性は随分と低くなりました。
PowerShellでヘルプをポップアップ表示させたい
Get-Help about_Windows_PowerShell_3.0 -ShowWindow
ファイル一覧の取得
一々パスを開く必要はありません。 このコマンド一つで表示されます。
Get-Help About* | Format-Wide Name -AutoSize
Windows 8 Pro x64での一覧です。
about_Aliases about_Arithmetic_Operators about_Arrays about_Assignment_Operators about_Automatic_Variables about_Break about_Command_Precedence about_Command_Syntax about_Comment_Based_Help about_CommonParameters about_Comparison_Operators about_Continue about_Core_Commands about_Data_Sections about_Debuggers about_Do about_Environment_Variables about_Escape_Characters about_Eventlogs about_Execution_Policies about_For about_Foreach about_Format.ps1xml about_Functions about_Functions_Advanced about_Functions_Advanced_Methods about_Functions_Advanced_Parameters about_Functions_CmdletBindingAttribute about_Functions_OutputTypeAttribute about_Group_Policy_Settings about_Hash_Tables about_History about_If about_Jobs about_Job_Details about_Join about_Language_Keywords about_Line_Editing about_Locations about_Logical_Operators about_Methods about_Modules about_Objects about_Object_Creation about_Operators about_Operator_Precedence about_Parameters about_Parameters_Default_Values about_Parsing about_Path_Syntax about_Pipelines about_PowerShell.exe about_PowerShell_Ise.exe about_Preference_Variables about_Profiles about_Prompts about_Properties about_Providers about_PSSessions about_PSSession_Details about_PSSnapins about_Quoting_Rules about_Redirection about_Ref about_Regular_Expressions about_Remote about_Remote_Disconnected_Sessions about_Remote_FAQ about_Remote_Jobs about_Remote_Output about_Remote_Requirements about_Remote_Troubleshooting about_Remote_Variables about_Requires about_Reserved_Words about_Return about_Run_With_PowerShell about_Scopes about_Scripts about_Script_Blocks about_Script_Internationalization about_Session_Configurations about_Session_Configuration_Files about_Signing about_Special_Characters about_Splatting about_Split about_Switch about_Throw about_Transactions about_Trap about_Try_Catch_Finally about_Types.ps1xml about_Type_Operators about_Updatable_Help about_Variables about_While about_Wildcards about_Windows_PowerShell_3.0 about_Windows_PowerShell_ISE about_WMI about_Wmi_Cmdlets about_WQL about_WS-Management_Cmdlets
簡単な説明も見たいならこれで。
Get-Help About* | Format-Wide Name -AutoSize
結果です。
PS D:\> Get-Help About* | Format-Table Name, Synopsis -AutoSize Name Synopsis ---- -------- about_Aliases Describes how to use alternate names for cmdlets and commands in Windows about_Arithmetic_Operators Describes the operators that perform arithmetic in Windows PowerShell. about_Arrays Describes arrays, which are data structures designed to store about_Assignment_Operators Describes how to use operators to assign values to variables. about_Automatic_Variables Describes variables that store state information for Windows PowerShell. about_Break Describes a statement you can use to immediately exit Foreach, For, While, about_Command_Precedence Describes how Windows PowerShell determines which command to run. about_Command_Syntax Describes the syntax diagrams that are used in Windows PowerShell. about_Comment_Based_Help Describes how to write comment-based help topics for functions and scripts. about_CommonParameters Describes the parameters that can be used with any cmdlet. about_Comparison_Operators Describes the operators that compare values in Windows PowerShell. about_Continue Describes how the Continue statement immediately returns the program flow about_Core_Commands Lists the cmdlets that are designed for use with Windows PowerShell about_Data_Sections Explains Data sections, which isolate text strings and other read-only about_Debuggers Describes the Windows PowerShell debugger. about_Do Runs a statement list one or more times, subject to a While or Until about_Environment_Variables Describes how to access Windows environment variables in Windows about_Escape_Characters Introduces the escape character in Windows PowerShell and explains about_Eventlogs Windows PowerShell creates a Windows event log that is about_Execution_Policies Describes the Windows PowerShell execution policies and explains about_For Describes a language command you can use to run statements based on a about_Foreach Describes a language command you can use to traverse all the items in a about_Format.ps1xml The Format.ps1xml files in Windows PowerShell define the default display about_Functions Describes how to create and use functions in Windows PowerShell. about_Functions_Advanced Introduces advanced functions that act similar to cmdlets. about_Functions_Advanced_Methods Describes how functions that specify the CmdletBinding attribute can use about_Functions_Advanced_Parameters Explains how to add parameters to advanced functions. about_Functions_CmdletBindingAttribute Describes the attribute that makes a function work like a about_Functions_OutputTypeAttribute SHORT DESCRIPTION about_Group_Policy_Settings Describes the Group Policy settings for Windows PowerShell about_Hash_Tables Describes how to create, use, and sort hash tables in Windows PowerShell. about_History Describes how to get and run commands in the command history. about_If Describes a language command you can use to run statement lists based about_Jobs Provides information about how Windows PowerShell background jobs run a about_Job_Details Provides details about background jobs on local and remote computers. about_Join Describes how the join operator (-join) combines multiple strings into a about_Language_Keywords Describes the keywords in the Windows PowerShell scripting language. about_Line_Editing Describes how to edit commands at the Windows PowerShell command prompt. about_Locations Describes how to access items from the working location in Windows about_Logical_Operators Describes the operators that connect statements in Windows PowerShell. about_Methods Describes how to use methods to perform actions on objects in Windows about_Modules Explains how to install, import, and use Windows PowerShell modules. about_Objects Provides essential information about objects in Windows PowerShell. about_Object_Creation Explains how to create objects in Windows PowerShell. about_Operators Describes the operators that are supported by Windows PowerShell. about_Operator_Precedence Lists the Windows PowerShell operators in precedence order. about_Parameters SHORT DESCRIPTION about_Parameters_Default_Values SHORT DESCRIPTION about_Parsing Describes how Windows PowerShell parses commands. about_Path_Syntax Describes the full and relative path name formats in Windows PowerShell. about_Pipelines Combining commands into pipelines in the Windows PowerShell about_PowerShell.exe Explains how to use the PowerShell.exe command-line tool. Displays about_PowerShell_Ise.exe Explains how to use the PowerShell_Ise.exe command-line tool. about_Preference_Variables Variables that customize the behavior of Windows PowerShell about_Profiles Describes how to create and use a Windows PowerShell profile. about_Prompts Describes the Prompt function and demonstrates how to create a custom about_Properties Describes how to use object properties in Windows PowerShell. about_Providers Describes how Windows PowerShell providers provide access to data and about_PSSessions Describes Windows PowerShell sessions (PSSessions) and explains how to about_PSSession_Details Provides detailed information about Windows PowerShell sessions and the about_PSSnapins Describes Windows PowerShell snap-ins and shows how to use and manage them. about_Quoting_Rules Describes rules for using single and double quotation marks about_Redirection Explains how to redirect output from Windows PowerShell to text files. about_Ref Describes how to create and use a reference variable type. about_Regular_Expressions Describes regular expressions in Windows PowerShell. about_Remote Describes 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 Contains questions and answers about running remote commands about_Remote_Jobs Describes how to run background jobs on remote computers. about_Remote_Output Describes how to interpret and format the output of remote commands. about_Remote_Requirements Describes the system requirements and configuration requirements for about_Remote_Troubleshooting Describes how to troubleshoot remote operations in Windows PowerShell. about_Remote_Variables Explains how to use local and remote variables in remote about_Requires Prevents a script from running without the required elements. about_Reserved_Words Lists the reserved words that cannot be used as identifiers because they 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 about_Scopes Explains the concept of scope in Windows PowerShell and shows how to set about_Scripts Describes how to run and write scripts in Windows PowerShell. about_Script_Blocks Defines what a script block is and explains how to use script blocks in about_Script_Internationalization Describes the script internationalization features of Windows PowerShell 2.0 about_Session_Configurations Describes session configurations, which determine the users who can about_Session_Configuration_Files Describes session configuration files, which can be used in a about_Signing Explains how to sign scripts so that they comply with the Windows about_Special_Characters Describes the special characters that you can use to control how about_Splatting SHORT DESCRIPTION about_Split Explains how to use the Split operator to split one or more strings into about_Switch Explains how to use a switch to handle multiple If statements. about_Throw Describes the Throw keyword, which generates a terminating error. about_Transactions Describes how to manage transacted operations in Windows PowerShell. about_Trap Describes a keyword that handles a terminating error. about_Try_Catch_Finally Describes how to use the Try, Catch, and Finally blocks to handle about_Types.ps1xml Explains how to use Types.ps1xml files to extend the types of objects about_Type_Operators Describes the operators that work with Microsoft .NET Framework types. about_Updatable_Help SHORT DESCRIPTION about_Variables Describes how variables store values that can be used in Windows about_While Describes a language statement that you can use to run a command block about_Wildcards Describes how to use wildcard characters in Windows PowerShell. about_Windows_PowerShell_3.0 Describes some of the new features that are included in about_Windows_PowerShell_ISE Describes the features and system requirements of Windows PowerShell about_WMI about_Wmi_Cmdlets Provides background information about Windows Management Instrumentation about_WQL about_WS-Management_Cmdlets Provides an overview of Web Services for Management (WS-Management) as
まとめ
about_xxxxは、コマンドではない概略を知るにはもってこいです。 ふと何だろうと思った時はぜひ。 特にwmiはこの情報が中々使えます。
