Question

看get-help get-childitem，我会算3

SYNTAX       Get-ChildItem [[-Path]] [[-Filter]] [-Exclude] [-Force] [-Include] [-Name] [-Recurse]   [-UseTransaction []]       []
      Get-ChildItem [[-Filter]] [-Exclude] [-Force] [-Include] [-Name] [-Recurse] -LiteralPath   [-UseTransaction []]       []
      Get-ChildItem [-Attributes] [-Directory] [-File] [-Force] [-Hidden] [-ReadOnly] [-System] [-UseTransaction]   []

但是，以下命令只能找到2（Items和LiteralItems）：

get-command get-childitem | select-object -expand ParameterSets | select-object Name

FWIW，show-command也只通过UI中的2个标签显示2个参数集。

我想问题是为什么生成的get-childitem帮助似乎打破了最后一个用例。

Answer 1

只有两个参数集。

PS> gcm Get-ChildItem -syntax

Get-ChildItem [[-Path] <string[]>] [[-Filter] <string>] [-Include <string[]>] [-Exclude <string[]>] [-Recurse]
[-Force] [-Name] [-UseTransaction] [-Attributes <FlagsExpression[FileAttributes]>] [-Directory] [-File] [-Hidden]
[-ReadOnly] [-System] [<CommonParameters>]

Get-ChildItem [[-Filter] <string>] -LiteralPath <string[]> [-Include <string[]>] [-Exclude <string[]>] [-Recurse]
[-Force] [-Name] [-UseTransaction] [-Attributes <FlagsExpression[FileAttributes]>] [-Directory] [-File] [-Hidden]
[-ReadOnly] [-System] [<CommonParameters>]

我相信帮助中显示的第三个集合向您展示了FileSystem提供程序的动态参数。当我在Get-ChildItem上执行帮助以查看证书提供者的动态参数时，我看到了这一点，例如：

PS> Get-Help Get-ChildItem -Full -Path cert:\

SYNTAX
    Get-ChildItem [[-Path] <String[]>] [[-Filter] <String>] [-Exclude <String[]>] [-Force] [-Include <String[]>]
    [-Name] [-Recurse] [-UseTransaction [<SwitchParameter>]] [<CommonParameters>]

    Get-ChildItem [[-Filter] <String>] [-Exclude <String[]>] [-Force] [-Include <String[]>] [-Name] [-Recurse]
    -LiteralPath <String[]> [-UseTransaction [<SwitchParameter>]] [<CommonParameters>]

    Get-ChildItem [-CodeSigningCert] [-DnsName <string>] [-EKU <string>] [-ExpiringInDays <int>]
    [-SSLServerAuthentication] [<CommonParameters>]

get-childitem有多少个参数集？

1 个答案: