简而言之，Write-Host 写入控制台本身.将其视为 VBScript 中的 MsgBox.另一方面，Write-Output 写入管道，因此下一个命令可以接受它作为其输入.您不需要使用 Write-Output 来编写对象，因为 Write-Output 是为您隐式调用的.

In a nutshell, Write-Host writes to the console itself. Think of it as a MsgBox in VBScript. Write-Output, on the other hand, writes to the pipeline, so the next command can accept it as its input. You are not required to use Write-Output in order to write objects, as Write-Output is implicitly called for you.

PS> Get-Service

将是相同的:

PS> Get-Service | Write-Output