[hasherfrog]

Код:

@ver > ver.txt 
@find "Microsoft Windows XP" ver.txt 
@if errorlevel 1 goto win98_actions else goto winxp_actions 
:win98_actions 
. . . 
 
@goto exti_here 
:winxp_actions 
. . . 
 
@goto exit_here 
. . . 
 
exit_here: 
@del ver.txt