List users on a terminal services server

qwinsta /server:servername1

 SESSIONNAME       USERNAME                 ID  STATE   TYPE        DEVICE
 services                                    0  Disc
 console                                     1  Conn
                   bob5                      2  Disc
 rdp-tcp#1         bob4                      3  Active
                   bob3                      4  Disc
 rdp-tcp#4         bob2                      5  Active
 rdp-tcp#0         bob                       6  Active