$wmi=Get-WmiObject -Class win32_computersystem
write-host "computer " $wmi.name " is:"
Switch($wmi.domainrole)
{
0{"`t Stand alone workstation"}
1{"`t Member workstation"}
2{"`t Stand alone server"}
3{"`t Member Server"}
4{"`t Back up domain controller"}
5{"`t Primary domain controller"}
default {"`t The role can not be determined"}
}