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Get-Help - Powershell 2.0 CmdLet

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Short description
Displays information about Windows PowerShell commands and concepts.

Get-Help [-Full] [[-Name] <string>] [-Category <string[]>] [-Component <string[]>] [-Functionality <string[]>] [-On
    line] [-Path <string>] [-Role <string[]>] [<CommonParameters>]
    Get-Help [-Detailed] [[-Name] <string>] [-Category <string[]>] [-Component <string[]>] [-Functionality <string[]>] 
    [-Online] [-Path <string>] [-Role <string[]>] [<CommonParameters>]
    Get-Help [-Examples] [[-Name] <string>] [-Category <string[]>] [-Component <string[]>] [-Functionality <string[]>] 
    [-Online] [-Path <string>] [-Role <string[]>] [<CommonParameters>]
    Get-Help [-Parameter <string>] [[-Name] <string>] [-Category <string[]>] [-Component <string[]>] [-Functionality <s
    tring[]>] [-Online] [-Path <string>] [-Role <string[]>] [<CommonParameters>]

The Get-Help cmdlet displays information about Windows PowerShell concepts and commands, including cmdlets, provide
    rs, functions and scripts. To get a list of all cmdlet help topic titles, type "get-help *". 
    If you type "Get-Help" followed by the exact name of a help topic, or by a word unique to a help topic, Get-Help di
    splays the topic contents. If you enter a word or word pattern that appears in several help topic titles, Get-Help 
    displays a list of the matching titles. If you enter a word that does not appear in any help topic titles, Get-Help
     displays a list of topics that include that word in their contents.
    In addition to "get-help", you can also type "help" or "man", which displays one screen of text at a time, or "<cmd
    let-name> -?", which is identical to Get-Help but works only for cmdlets. 
    You can display the entire help file or selected parts of the file, such as the syntax, parameters, or examples. Yo
    u can also use the Online parameter to display an online version of a help file in your Internet browser. These par
    ameters have no effect on conceptual help topics.
    Conceptual help topics in Windows PowerShell begin with "about_", such as "about_Comparison_Operators". To see all 
    "about_" topics, type "get-help about_*". To see a particular topic, type "get-help about_<topic-name>", such as "g
    et-help about_Comparison_Operators".