The below batch file script is a chatroom batch with command prompt decoy screen. It works over local network by saving chat logs to a shared storage device.

:: Batch Messenger Chat Rev 3.0 (11/29/2013)

@ ECHO OFF

:: Setup

SetLocal EnableDelayedExpansion

:: First time handle

SET 1sthandle= ! Username !

:: Setup prefered time/date.

FOR /F "TOKENS=*" %% A IN ( 'TIME/T' ) DO SET NowT= %% A & FOR /F "TOKENS=*" %% A IN ( 'DATE/T' ) DO SET NowD= %% A

:: Version detection- send user to appropriate Windows CMD Decoy screen. XP through 8.1

FOR /f "tokens=1,2,3* delims=." %% a IN ( 'ver' ) DO ( SET WVer= %% a & SET WVer= ! WVer:~-1 ! & SET WVer= ! WVer ! . %% b . %% c & SET WVer= ! WVer:]= !)

ver | findstr /i "6\.3\." > nul

If ! errorlevel ! equ 0 VER & ECHO . ( c ) 2013 Microsoft Corporation. All rights reserved. & GOTO : Win8CMD

ver | findstr /i "6\.2\." > nul

If ! errorlevel ! equ 0 VER & ECHO . ( c ) 2012 Microsoft Corporation. All rights reserved. & GOTO : Win8CMD

ver | findstr /i "6\.1\." > nul

If ! errorlevel ! equ 0 VER & ECHO .Copyright ( c ) 2009 Microsoft Corporation. All rights reserved. & GOTO : Win7CMD

ver | findstr /i "6\.0\." > nul

If ! errorlevel ! equ 0 VER & ECHO .Copyright ( c ) 2006 Microsoft Corporation. All rights reserved. & GOTO : WinVISTACMD

ver | findstr /i "5\.1\." > nul

If ! errorlevel ! equ 0 VER & ECHO ECHO . ( C ) Copyright 1985-2001 Microsoft Corp. & GOTO : WinXPCMD

:: Decoy Screens

: Win8CMD

:: Windows 8.1 Command Prompt

TITLE Command Prompt

GOTO : login

: Win7CMD

:: Windows 7 Command Prompt

TITLE C:\Windows\system32\cmd.exe

GOTO : login

: WinVISTACMD

:: Windows Vista Command Prompt

TITLE C:\Windows\system32\cmd.exe

GOTO : login

: WinXPCMD

:: Windows XP Professional Command Prompt

TITLE C:\WINDOWS\system32\cmd.exe

GOTO : login

: login

:: Query Login

SET Login=

ECHO .

SET /P Login= ! Userprofile ! ^>

IF /i " ! Login ! "=="letmein" CLS & GOTO : 1stname

) ELSE (

ECHO .' ! Login ! ' is not recognized as an internal or external command,

ECHO .operable program or batch file.

ECHO .

GOTO : login

: 1stname

reg query HKCU\Environment /v handle 2 > NUL

IF ! ErrorLevel ! EQU 0 GOTO : MainMenu

ECHO . Name currently set as [ ! 1 sthandle ! ].

ECHO .

choice /C YN /M " Do you wish to keep this as your name?:"

if ! ERRORLEVEL ! EQU 1 SETX handle ! 1 sthandle ! & GOTO : MainMenu

if ! ERRORLEVEL ! EQU 2 ECHO . & Set /p Handle= ^< Enter your new name: ^> :

SETX Handle ! Handle !

: MainMenu

TITLE Main Menu

CLS

ECHO .

ECHO . ^< Your name is: ! handle ! ^>

ECHO .

ECHO . ^< /Main Manu/ ^>

ECHO .

ECHO . ^[ A ^] Information

ECHO .

ECHO . ^[ B ^] Chat Rooms

ECHO .

ECHO . ^[ C ^] Change Name

ECHO .

ECHO . ^[ D ^] Exit

ECHO .

choice /C ABCDE /N /M "Select menu item:"

if ! ERRORLEVEL ! EQU 5 reg delete HKCU\Environment /v handle /F & PAUSE > NUL & EXIT

if ! ERRORLEVEL ! EQU 4 EXIT > NUL

if ! ERRORLEVEL ! EQU 3 ECHO . & SET /P handle= ^< /Enter your new name here/ ^> : & SETX handle ! handle ! & CLS & GOTO : MainMenu

if ! ERRORLEVEL ! EQU 2 CLS & goto : Rooms

if ! ERRORLEVEL ! EQU 1 CLS & goto : Information

: Information

ECHO .

ECHO . ^< /Basic Info/ ^>

ECHO .

ECHO . This chat script is limited to specific

ECHO . conditions in which it can function.

ECHO .

ECHO . It can only function in the way it is ment to

ECHO . if it can acess a shared directory. Ex: Two

ECHO . computers on a network can access directory Z:\Chat\Chat.log

ECHO . That way, the two computers located on said network

ECHO . can run this chat script and it be able to access the

ECHO . previously mentioned Z:\Chat\Chat.log so that it can read

ECHO . and write. That file- is basically the chat room.

ECHO .

ECHO . This chat script will also function over DropBox. Place the

ECHO . script inside a shared folder and start chatting. Just be careful

ECHO . not to talk to quickly cause DropBox has limits on modificiations

ECHO . of files because it creates upload conflicts.

ECHO .

PAUSE & GOTO : MainMenu

: Rooms

ECHO .

ECHO . ^< While in a chat room, type /Help for information ^>

ECHO .

ECHO . Under Construction

ECHO .

PAUSE

GOTO : ChatScript

: ChatScript

IF NOT EXIST Chat.log ECHO . >> Chat.Log

ECHO . ! NowT ! [ ! HANDLE ! ] joined the discussion. >> Chat.log & ECHO . >> Chat.log

: MESSAGE

IF NOT EXIST Chat.log ECHO . >> Chat.Log

set message=

CLS

ECHO .

TYPE Chat.log

ECHO .

ECHO .__________________________

set /p message= ! HANDLE ! :

if not defined message goto message

IF /I " ! message ! "=="/del" del /Q chat.log & ECHO . ! NowT ! [ ! HANDLE ! ]: deleted logs on ! NowD !>> Chat.log & ECHO . >> Chat.log & CLS & GOTO : MESSAGE

IF /I " ! message ! "=="/Main" ECHO . >> Chat.log & ECHO . ! NowT ! [ ! HANDLE ! ]: exited the discussion. >> Chat.log & ECHO . >> Chat.log & GOTO : MainMenu

IF /I " ! message ! "=="/nick" Set OldHandle= ! HANDLE !& ECHO . & set /p handle= ^< /Enter your new name here/ ^> : & SETX Handle ! HANDLE ! & ECHO . ! NowT ! [ ! OldHandle ! ]: changed name to [ ! Handle ! ] >> Chat.log & GOTO : Message

IF /I " ! message ! "=="/Main" ECHO . >> Chat.log & ECHO . ! NowT ! [ ! HANDLE ! ]: exited the discussion. >> Chat.log & ECHO . >> Chat.log & EXIT

IF /I " ! message ! "=="/Help" CLS & GOTO : ChatCommands

>> Chat.log echo ! NowT ! [ ! handle ! ]: ! message !

)

goto message

: ChatCommands

ECHO . & ECHO . ^< /These are a list of commands to use while in a chat room. / ^>

ECHO . & ECHO . & ECHO . /Help = Displays this help information.

ECHO . & ECHO . /Main = Return to the main menu.

ECHO . & ECHO . /Nick = Changes your name. ( Handle- A enviromental setting. )

ECHO . & ECHO . / Del = Deletes your current chat rooms chat logs. ( There are no backups. )

ECHO . & ECHO . / Exit = To leave the chat and close the command prompt.

ECHO . & ECHO .