How to get process id by its service name with a script to variable

Question

I have service named WinDefend and it runs on process svchost.exe
There other many svchost.exe processes and I need to find a way

Answer 1

tasklist is just returning text, not actual objects that have properties you can access. You can use WMI to get this information instead:

$id = Get-WmiObject -Class Win32_Service -Filter "Name LIKE 'WinDefend'" | 
      Select-Object -ExpandProperty ProcessId

$process = Get-Process -Id $id