为什么Get-content支持-wait参数？

Question

在Powershell V2中获取Get-content的帮助时,我找不到-Wait参数.虽然我可以将此参数与相同的cmdlet一起使用.这不是常见的参数之一.

NAME
    Get-Content

SYNOPSIS
    Gets the content of the item at the specified location.

SYNTAX
    Get-Content [-LiteralPath] <string[]> [-Credential <PSCredential>] [-Exclude <string[]>] [-Filter <string>] [-Force
    ] [-Include <string[]>] [-ReadCount <Int64>] [-TotalCount <Int64>] [-UseTransaction] [<CommonParameters>]

    Get-Content [-Path] <string[]> [-Credential <PSCredential>] [-Exclude <string[]>] [-Filter <string>] [-Force] [-Inc
    lude <string[]>] [-ReadCount <Int64>] [-TotalCount <Int64>] [-UseTransaction] [<CommonParameters>]

唯一的命令行开关我可以找到在Powershell V2中明确提到-Wait参数的地方 Start-process

get-content调用是否在引擎盖下启动？如何在Get-content中使用-Wait参数？

这可能有助于发现"帮助"中未提及的其他参数,但可以与该cmdlet一起使用.在此先感谢您的帮助!

Answer 1

PowerShell的更高版本中添加了此开关的文档.这是来自PS 4.0.

PS > Get-Help Get-Content -Parameter wait

-Wait [<SwitchParameter>]
    Waits for the cmdlet to get the content before returning the command prompt. While waiting, Get-Content checks the
    file once each second until you interrupt it, such as by pressing CTRL+C.

    Wait is a dynamic parameter that the FileSystem provider adds to the Get-Content cmdlet. This parameter works only
    in file system drives.

    Required?                    false
    Position?                    named
    Default value                False
    Accept pipeline input?       false
    Accept wildcard characters?  false