都可以查詢命令。
Get-Help 是從手冊中查詢，會提供完整的內容。如果你想要查詢的命令是本地端裝設的應用程式，請用 Get-Command ，Get-Help 會認不出來。
以下是兩個命令查詢 ls 的區別：
Get-Command ls
CommandType Name Version Source
----------- ---- ------- ------
Alias ls -> Get-ChildItem
Get-Help ls
NAME
Get-ChildItem
SYNTAX
Get-ChildItem [[-Path] <string[]>] [[-Filter] <string>] [-Include <string[]>] [-Exclude <string[]>] [-Recurse] [-Depth <uint32>] [-Force]
[-Name] [-UseTransaction] [-Attributes {ReadOnly | Hidden | System | Directory | Archive | Device | Normal | Temporary | SparseFile |
ReparsePoint | Compressed | Offline | NotContentIndexed | Encrypted | IntegrityStream | NoScrubData}] [-Directory] [-File] [-Hidden]
[-ReadOnly] [-System] [<CommonParameters>]
Get-ChildItem [[-Filter] <string>] -LiteralPath <string[]> [-Include <string[]>] [-Exclude <string[]>] [-Recurse] [-Depth <uint32>]
[-Force] [-Name] [-UseTransaction] [-Attributes {ReadOnly | Hidden | System | Directory | Archive | Device | Normal | Temporary |
SparseFile | ReparsePoint | Compressed | Offline | NotContentIndexed | Encrypted | IntegrityStream | NoScrubData}] [-Directory] [-File]
[-Hidden] [-ReadOnly] [-System] [<CommonParameters>]
ALIASES
gci
ls
dir
REMARKS
Get-Help cannot find the Help files for this cmdlet on this computer. It is displaying only partial help.
-- To download and install Help files for the module that includes this cmdlet, use Update-Help.
-- To view the Help topic for this cmdlet online, type: "Get-Help Get-ChildItem -Online" or
go to https://go.microsoft.com/fwlink/?LinkID=113308.
以下是兩個命令查詢 git 的區別：
Get-Command git
CommandType Name Version Source
----------- ---- ------- ------
Application git.exe 2.30.2.1 C:\Program Files\Git\cmd\git.exe
Get-Help git
Get-Help : Get-Help could not find git in a help file in this session. To download updated help topics type: "Update-Help". To get help
online, search for the help topic in the TechNet library at https:/go.microsoft.com/fwlink/?LinkID=107116.
At line:1 char:1
+ Get-Help git
+ ~~~~~~~~~~~~
+ CategoryInfo : ResourceUnavailable: (:) [Get-Help], HelpNotFoundException
+ FullyQualifiedErrorId : HelpNotFound,Microsoft.PowerShell.Commands.GetHelpCommand
-
Get-Command
-
Get-Command
"Get-Command *" 會取得所有 Windows PowerShell 元素以及 Path 環境變數 ($env:path) 中的所有非 Windows PowerShell 檔案。它會將這些檔案歸類為「應用程式」命令類型群組。