run a script to rename several words in a txt file

Question

I need your help. I have a txt file in a directory (folder) and need to run a script to rename several words, eg.

where LX4XAB to LX4xab and where is XS3X44 to Xs3x44

Answer 1

Here you go:

@echo off
setlocal enabledelayedexpansion
(for /f "tokens=*" %%f in (input1.txt) do (
        set "line=%%f"
        set "line=!line:LX4XAB=LX4xab!"
        set "line=!line:XS3X44=Xs3x44!"
        echo(!line!
)) > newfile.txt

Revision 1

Here is how you can do it with multiple files and doing the naming the way you asked for.

@echo off
setlocal enabledelayedexpansion
cd /d C:\Temp
for %%a in (*.txt) do (
  echo %%~nxa|Find /i "_new">nul
  if errorlevel 1 (
    (for /f "tokens=*" %%f in (%%a) do (
        set "line=%%f"
        set "line=!line:LX4XAB=LX4xab!"
        set "line=!line:XS3X44=Xs3x44!"
        echo(!line!
    )) > %%~na_new.txt
  ) 
  echo %%~nxa|Find /i "_new">nul
  if errorlevel 1 ren %%~nxa %%~na.old
)