How to check if a port is in use using powershell

Is there a way in pow开发者_运维技巧ershell to check if a given port is in use or not?

Use Get-NetTCPConnection

Get-NetTCPConnection | where Localport -eq 5000 | select Localport,OwningProcess

Localport OwningProcess
--------- -------------
    5000          1684

If you are using PowerShell Core v6 and above use Test-Connection

>Test-Connection localhost -TcpPort 80
True

Following the other answers, once you run Get-NetTCPConnection | where Localport -eq 5000 | select Localport,OwningProcess you can check which process/application is using the port by running Get-Process

Get-Process -Id <OwningProcess>

You could just roll it into one:

Get-NetTCPConnection | where Localport -eq 5000| Select-Object Localport,@{'Name' = 'ProcessName';'Expression'={(Get-Process -Id $_.OwningProcess).Name}}