Script: Mass emergency computer shutdown

:: Author:          --removed--
:: Purpose:         Performs mass shutdown for specified computers
:: Requirements:    1. Run this script with admin privileges
::                  2. Put the names of your computers, one per line, in "names" file in the same directory as this script
:: Version:         1.0 Initial write

:: Prep
:prep
@echo off
title Mass Shutdown
set NAMES_FILE=names.txt
set VERSION=1.0
set TIMER=120
set MESSAGE=Due to generator maintenance, this computer is shutting down in %TIMER% seconds. Save all work and log off immediately.
set TARGET=
cls

:: Menu
:shutdown
echo.
echo  Mass Shutdown script - pretty awesome
echo.
echo  Timeout:    %TIMER%
echo  Names File: %NAMES_FILE%
echo  Message:    %MESSAGE%
echo.
echo  Enter one of the following:
echo    - The IP or name of a computer to shutdown in %TIMER% seconds.
echo    - 'all' to shutdown ALL computers in %NAMES_FILE%. You will be asked to confirm.
echo    - 'abort' to cancel a pending shutdown.
echo    - 'exit' to quit
echo.
:shutdown_loop
@set /P TARGET= Choice:
    if '%TARGET%'=='all' goto shutdown_auto    
    if '%TARGET%'=='abort' goto shutdown_abort
    if '%TARGET%'=='exit' goto end
:: else we assume a target was chosen
shutdown -s -f -m \\%TARGET% -t %TIMER% -c "%MESSAGE%"
set TARGET=
echo.
goto shutdown_loop


:: HIROSHIMA!
:shutdown_auto
title Mass Shutdown
cls
echo.
echo Verify information:
echo.
echo Timeout:    %TIMER%
echo Target:     %TARGET%
echo Names File: %NAMES_FILE%
echo Message:    %MESSAGE%
echo.
echo Ready??
echo.
pause
echo Commencing...
echo.
echo Performing mass shutdown, %TIMER% second countdown.
echo Please wait...
echo.
FOR /F %%i in (%NAMES_FILE%) do shutdown -s -f -m \\%%i -t %TIMER% -c "%MESSAGE%"
goto shutdown

:shutdown_abort
title Abort a mass shutdown
:shutdown_abort_menu
cls
echo.
echo  Enter one of the following:
echo     - The IP or name of a computer to cancel a pending shutdown
echo     - 'all' to cancel a pending mass shutdown.
echo     - 'shutdown' to return to shutdown mode
echo     - 'exit' to quit
echo.
:shutdown_abort_loop
@set /P TARGET= Choice:
    if '%TARGET%'=='all' goto shutdown_abort_auto    
    if '%TARGET%'=='shutdown' goto prep
    if '%TARGET%'=='exit' goto end
:: else we assume a target was chosen
shutdown -a -m \\%TARGET%
set TARGET=
echo.
goto shutdown_abort_loop


:shutdown_abort_auto
FOR /F %%i in (%NAMES_FILE%) do shutdown -a -m \\%%i
goto end

:end
title %USERNAME%