Tee-Object

Saves command output in a file or variable and also sends it down the pipeline. Note: This command can only be used through PowerShell. More information: https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/tee-object.

Output processes to a file and to the console:

Get-Process | Tee-Object -FilePath {{path\to\file}}

Output processes to a variable and Select-Object:

Get-Process notepad | Tee-Object -Variable {{proc}} | Select-Object processname,handles