top equivalent for powershell

top_powershell.ps1

while (1) {ps | sort -desc cpu | select -first 30; sleep -seconds 2; cls; 
write-host "Handles  NPM(K)    PM(K)      WS(K) VM(M)   CPU(s)     Id ProcessName"; 
write-host "-------  ------    -----      ----- -----   ------     -- -----------"}

This command acts in a powershell session like the linux command top
I found it there: http://superuser.com/questions/176624/linux-top-command-for-windows-powershell#176625