Question

I need a batch script to get the input from user and write it to second column in a text file. Below is the one I tried, but it just create the incremental sequence of numbers, but I cant place them in the right place.

set /p rows: Enter number of rows:

for /l %%g in (1,1,%rows%) do echo %%g>> myfile.txt

myfile.txt is a comma separated file having 10 columns.

I want the incremental row numbers to come in second column.

Answer 1

Assuming myfile.txt file looks something like this

h,e,l,l,o,b,a,l,i,c

Then this

setlocal enabledelayedexpansion
set /p num=Enter number of rows:
set /a row=1
for /f "tokens=1-10 delims=," %%a in (myfile.txt) do (
echo %%a,!row!,%%b,%%c,%%d,%%e,%%f,%%g,%%h,%%i,%%j >>new.txt
set /a row+=1
if !row! gtr !num! goto :BREAK
)
:BREAK
del myfile.txt /f /q
ren new.txt myfile.txt

Will output

h,1,e,l,l,o,b,a,l,i,c  
h,2,e,l,l,o,b,a,l,i,c