I have a batch file that counts the number of lines in each text file inside a directory, and then prepends the total number of lines in each file to the beginning of each file in the directory. It looks like this:

@echo off
setlocal enabledelayedexpansion
cd /d "C:\Users\John\Desktop\Testing\AllFiles"
for /f "delims=" %%F in ('dir /b *.txt') do (
   for /f "delims=:" %%N in ('findstr /N /R "^" "%%~dpnxF"') do set lines=%%N

      echo There are !lines! lines in this file > "%%~dpnxF.temp"
      type "%%~dpnxF">>"%%~dpnxF.temp"
      del "%%~dpnxF"
      echo "%%~dpnxF.temp" "%%~nxF"
      ren "%%~dpnxF.temp" "%%~nxF"

      )

The batch file above works great for small text files in the directory, however, it takes a long time to read the large text files in the directory.

As you stated in your blog, using the code

findstr /R /N "^" file.txt

Does not work well for counting the lines in large text files. So, i added the following code:

findstr /R /N "^" file.txt | find /C ":"

from your blog into the batch file, and now it looks like this:

@echo off
setlocal enabledelayedexpansion
cd /d "C:\Users\John\Desktop\Testing\AllFiles"
for /f "delims=" %%F in ('dir /b *.txt') do (
   for /f "delims=:" %%N in ('findstr /N /R "^" "%%~dpnxF" | find /C ":"') do set lines=%%N

      echo There are !lines! lines in this file > "%%~dpnxF.temp"
      type "%%~dpnxF">>"%%~dpnxF.temp"
      del "%%~dpnxF"
      echo "%%~dpnxF.temp" "%%~nxF"
      ren "%%~dpnxF.temp" "%%~nxF"

      )

But, when i run the modified code, i get the following error:

": was unexpected at this time"

Do you know what i am doing wrong?

Thanks in advance :)

type *.txt | findstr /R /N "^" | find /C ":"

good for use to count total lines of all the files.

This below dos code when I run in batch file it Rename all files in Numeric sequence like 1.jpg, 2.jpg, 3.jpg, 4.jpg……. one problem with this code. suppose we have 99 files, When it rename the last file 99.jpg then at the end it again rename 9.jpg to last file like 100.jpg do u have a clue to fix it so it don't do that or have better dos batch file code to do this task.
===================================================

@echo off
set /a cnt=1
for %%a in (*.jpg) do call :PROCESS "%%a"
goto :EOF
:PROCESS
ren %1 %cnt%.jpg
set /a cnt+=1

===================================================

Thanks

Thanks.