从PowerShell 3.0版本开始，Get-Content cmdlet有一个-Tail参数，这应该会有所帮助。关于Get-Content，请参阅technet库的在线帮助。

对Get-Content使用-wait参数，它将显示添加到文件中的行。这个特性在PowerShell v1中就有了，但是由于某种原因在v2中没有很好地记录。

这里有一个例子

Get-Content -Path "C:\scripts\test.txt" -Wait

运行此命令后，更新并保存该文件，您将在控制台上看到更改。

对于那些以“打字越少越好”为原则的管理员来说，下面是我能找到的最短版本:

gc filename -wai -ta 10

PowerShell Community Extensions (PSCX)提供了Get-FileTail cmdlet。这看起来是一个适合这项任务的解决方案。注意:我没有尝试它与非常大的文件，但描述说，它有效地尾部内容，它是为大型日志文件设计的。

NAME
    Get-FileTail

SYNOPSIS
    PSCX Cmdlet: Tails the contents of a file - optionally waiting on new content.

SYNTAX
    Get-FileTail [-Path] <String[]> [-Count <Int32>] [-Encoding <EncodingParameter>] [-LineTerminator <String>] [-Wait] [<CommonParameters>]

    Get-FileTail [-LiteralPath] <String[]> [-Count <Int32>] [-Encoding <EncodingParameter>] [-LineTerminator <String>] [-Wait] [<CommonParameters>]

DESCRIPTION
    This implentation efficiently tails the cotents of a file by reading lines from the end rather then processing the entire file. This behavior is crucial for ef
    ficiently tailing large log files and large log files over a network.  You can also specify the Wait parameter to have the cmdlet wait and display new content
    as it is written to the file.  Use Ctrl+C to break out of the wait loop.  Note that if an encoding is not specified, the cmdlet will attempt to auto-detect the
     encoding by reading the first character from the file. If no character haven't been written to the file yet, the cmdlet will default to using Unicode encoding
    . You can override this behavior by explicitly specifying the encoding via the Encoding parameter.

非常基本，但不需要任何附加模块或PS版本要求:

while ($true){清除主机;gc E:\test.txt | select -last 3;睡眠2}

可以从这个GitHub存储库下载为Windows编译的所有UNIX命令:https://github.com/George-Ogden/UNIX