Help DOS batch scripting

Hi all, i have a problem with a DOS batch script.

i have a .txt file with this structure:

headerfield1,headerfield2,headerfield3,headerfield4
detail1field1,detail1field2,detail1field3,detail1field4,detail1field5
detail2field1,detail2field2,detail2field3,detail2field4,detail2field5
detail3field1,detail3field2,detail3field3,detail3field4,detail3field5
detail4field1,detail4field2,detail4field3,detail4field4,detail4field5
detail5field1,detail5field2,detail5field3,detail5field4,detail5field5
detail6field1,detail6field2,detail6field3,detail6field4,detail6field5
.
.
.
detailnfield1,detailnfield2,detailnfield3,detailnfield4,detailnfield5



and i want it to be like this

headerfield1,headerfield2,headerfield3,headerfield4,detail1field1,detail1field2,detail1field3,detail1field4,detail1field5
headerfield1,headerfield2,headerfield3,headerfield4,detail2field1,detail2field2,detail2field3,detail2field4,detail2field5
headerfield1,headerfield2,headerfield3,headerfield4,detail3field1,detail3field2,detail3field3,detail3field4,detail3field5
headerfield1,headerfield2,headerfield3,headerfield4,detail4field1,detail4field2,detail4field3,detail4field4,detail4field5
headerfield1,headerfield2,headerfield3,headerfield4,detail5field1,detail5field2,detail5field3,detail5field4,detail5field5
headerfield1,headerfield2,headerfield3,headerfield4,detail6field1,detail6field2,detail6field3,detail6field4,detail6field5
.
.
.
headerfield1,headerfield2,headerfield3,headerfield4,detailnfield1,detailnfield2,detailnfield3,detailnfield4,detailnfield5

in other words the original file is like:
line1
line2
line3
line4
line5
.
.
.
lineN

and i want
line1line2
line1line3
line1line4
line1line5
.
.
.
line1lineN



i have a little batch script that create 2 files, one with the header line (line1) and the other with all the detail lines (line2 till lineN), but dont know how to create a file with the format i explain above.

Thanks for your help

Regards

Javier.

 

How about this?...

filename.txt = Original File
newfile.txt = Output File

Code:

@echo off
set counter=0
type filename.txt|find /i /v /n ""|find "[1]">%temp%\~header.tmp
for /f "tokens=2 delims=]" %%a in (%temp%\~header.tmp) do set Prefix=%%a
for /f "tokens=1 delims=*" %%a in (filename.txt) do call :subroutine "%%a"
if exist %temp%\~header.tmp del %temp%\~header.tmp
set counter=
goto end
:subroutine
set /a counter=%counter%+1
if "%counter%"=="1" goto end
set Suffix=%~1
if exist newfile.txt echo %Prefix%,%Suffix%>>newfile.txt
if not exist newfile.txt echo %Prefix%,%Suffix%>newfile.txt
:end