Question

I have a XML file and I need to replace a perticular line say 7th line with the my own line using DOS command. How to do this?

Answer 1

My proposal is based on the fact you identify the line by its number and not by its content

@echo OFF
REM Say LINE 7 to be removed
SETLOCAL ENABLEDELAYEDEXPANSION
SET LOWER=6
SET UPPER=8
SET INDEX=0
SET MYLINE="this is my new line"
SET OUTFILE=%~n1.new%~x1
>%OUTFILE% (
    for /F "tokens=*" %%L in (%1) do (SET /A INDEX += 1
        IF !INDEX! LEQ %LOWER% (echo %%L) ELSE break
    )
    echo %MYLINE%
    more +%UPPER% %1
)

• echo off needed since we do a massive redirect
• ENABLEDELAYEDEXPANSION
  needed for the counter in the loop
• You just pass the xml file as an argument to the script.

HTH