I'm trying to write a script that would run through a bunch of large text files, and split them in half. I've got some of the code figured out, but I can't figure out how to go about copying all data in the file after the mid point to a new file. I just need to figure out how to count the lines, cut it in half, and append the data to a new file name >> newfile.txt Any help would be greatly appreciated.

:: SPLIT.BAT Usage: split Filename @echo off & setlocal EnableDelayedExpansion set param=%* set param=%param:"=% for %%j in ("%param%") do set file=%%~nj for /F %%j in ('type "%param%" ^| find /V /C ""') do set Half=%%j set /A Half/=2 type nul > "%file%_A.txt" set N=1 for /F "tokens=1* delims=]" %%j in ('type "%param%" ^| find /V /N ""') do ( if !N! gtr %Half% goto :SPLIT set /A N+=1 echo.%%k>> "%file%_A.txt" ) :SPLIT type nul > "%file%_B.txt" for /F "skip=%Half% tokens=1* delims=]" %%j in ('type "%param%" ^| find /V /N ""') do ( echo.%%k>> "%file%_B.txt" ) :: End_Of_Batch If the filename has spaces enclose the name between double quotes, e.g. split "split file.txt"

Can I put this in a loop for %%a in (*.*) do ( ) in order to run through multiple files? Thanks very much in advance for your help!!!!

if you can download and use split (for windows) , the most basic command is c:\test> split file

Hey, Thanks for the suggestion, but I'm also trying to learn/understand the coding process of scripts while I do this... I've already downloaded that app if all else fails...

that's all right, since you are still learning. But in reality, i can tell you that you will seldom need to reinvent the wheel like that.

First of all replace the Split.bat code with the following revised version that is more efficient and has full check of the parameter file: :: SPLIT.BAT Usage: split [device:][pathname]filename @echo off & setlocal EnableDelayedExpansion set param=%* if not defined param ( echo. echo. Usage: split [device:][pathname]filename goto :EOF ) set param=%param:"=% if not exist "%param%" ( echo. echo. File "%param%" not found goto :EOF ) for %%j in ("%param%") do ( set name=%%~dpnj set ext=%%~xj ) for /F %%j in ('type "%param%" ^| find /V /C ""') do set Half=%%j set /A Half/=2 type nul > "%name%_A%ext%" type nul > "%name%_B%ext%" set X=A set N=1 for /F "tokens=1* delims=]" %%j in ('type "%param%" ^| find /V /N ""') do ( set /A N+=1 echo.%%k>> "%name%_!X!%ext%" if !N! gtr %Half% set X=B ) :: End_Of_Batch Then the easiest way to perform mass splitting is to call the above batch from a main one, i.e. :: MASSPLIT.BAT Usage: massplit Folder_Name @echo off pushd %* echo. Splitting, please wait... for /F "delims=" %%j in ('dir /B *.txt') do call %~dp0\split %%j echo. DONE popd :: End_Of_Batch Store both scripts into the same directory and then type e.g. massplit C:\My Dir\test The process may take mimutes so be patient. I tested the script under Win 2K/XP and it worked fine. You can directly put it into a For loop, but that requires a bit of code rearranging and so I selected the shortest way. To ghostdog The scientist Enrico Fermi who built the first nuclear reactor (and then the atomic bomb in Los Alamos) loved to reinvent the wheel and he discovered new ways to build wheels. Anyway sometime it is better to be able to perform a calculation by your own hands even if you can't operate a calculator or a computer.