有没有一种方法可以警告远程计算机等待重新启动，并且让我的脚本等待重新启动完成？

Question

I'm looking to combine the "You will be logged off in x minutes" functionality of 'shutdown.exe", and the "-Wait -For PowerShell" functionality of the Restart-Computer cmdlet.

I have a script that requires a remote computer to restart. I'd like to warn the user of the remote computer that their computer will restart in 5 minutes. I would also like my script to wait until the restart completes before continuing forward.

Shutdown.exe has a great warning system and delay built in, but no great way to have the script wait for the reboot to complete. I've tried a loop that waits until Test-Connection is $true, but of course a computer returns a ping before it can accept PowerShell commands like Invoke-Command. I could slap a Start-Sleep on the end, but the time between ping and PowerShell accepting commands varies per computer.

Restart-Computer has a great "wait for PowerShell" feature, but there's no way to warn the user of the remote computer that their computer is about to restart. I've tried running the commands below, but the restart-computer cmdlet will throw an error if there's already a shutdown in progress.

shutdown /r /t 300 /m \\computer $system
restart-computer -computername $system -Force -Wait -For PowerShell -Timeout 300 -Delay 2

Answer 1

我不会说这是对您问题的完整答案，但是请使用Test-WSMan代替Test-NetConnection （仅测试ping / TCP，如您所提到的那样），它将测试PowerShell Remoting所基于的协议（请注意其他协议）可能，但是您可能只是在您的环境中使用了此功能）。

Answer 2

You can try just sending the message just before your call to Restart-Computer using the msg command:

msg * /SERVER:$system /TIME:300 "Computer will be restarted in 5 minutes."
restart-computer -computername $system -Force -Wait -For PowerShell -Delay 2