Terminal Services Remote Desktop Command Line

References
Terminal Services commands (WinXP Help and Support Center)
mk:@MSITStore:C:\WINDOWS\Help\ntcmds.chm::/ts_cmds.htm

Terminal Services query commands: Terminal Services
http://technet.microsoft.com/en-us/library/cc755411.aspx

Examples

C:\>query user /server:123.123.123.123
USERNAME            SESSIONNAME        ID  STATE   IDLE TIME  LOGON TIME
user1                                   0  Disc           23  7/23/2008 3:11 PM
user2               rdp-tcp#107         1  Active          8  7/22/2008 10:23 AM
user1               rdp-tcp#102         3  Active         23  7/24/2008 10:20 AM

C:\>query session /server:123.123.123.123
SESSIONNAME       USERNAME                 ID  STATE   TYPE        DEVICE
                  user1                     0  Disc    rdpwd
rdp-tcp                                 65536  Listen  rdpwd
console                                     4  Conn    wdcon
rdp-tcp#107       user2                     1  Active  rdpwd
rdp-tcp#102       user1                     3  Active  rdpwd

C:\>reset session 0 /v /server:123.123.123.123
Resetting session ID 0
Session ID 0 has been reset

mstsc.exe /console
Connects to the console session of the specified Windows 2000 Server.

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DOS BAT file utility source code for querying session:

@echo off
echo Server=%1
echo.
query session /server:%1
echo.
query user /server:%1
echo.
echo Reset syntax:
echo reset session # /v /server:%1
echo.
pause

Create shortcut to call bat file and pass IP address in target. Example:
"C:\MyUtilities\query session.bat" "123.1.2.3"