Hi, how do I add a number into the name of files created by batch file? Each time the bat is run, the number increases by one. I do not mind a separate file storing this number.

Storing the number is quite easy: > numfile echo %num% Where "numfile" is whatever you want to call your number file and %num% is a variable containing you number. It doesn't have to be a variable but since it will change each time it is run it is probably a good idea. The file will be overwritten with the new number each time so it will only contain the current number. Retrieving the number is just as easy: set /p num=<numfile The number will be contained in the variable %num%. This can be built upon to start from a specified number (I'll use 0) if "numfile" doesn't exist. if exist "numfile" ( set /p num=<numfile ) else ( set num=0 ) To increment the number you can use the set /a command. set /a num+=1

thanks, it works

One more question. I would like to append a log behind this number. Reading works fine, writing the log records works fine, but I do not know how to rewrite the first line (the number) I can only rewrite the whole file.

Editing files from a batch script has been somewhat neglected, there are 3 main choices, running the whole file through a for loop and into a new file, third party utilities or the antiqued dos edlin that is not included with 64bit systems. In both of the examples below it is important that your number is always on the very first line. In your case using the for loop method may look something like: >newfile echo %num% for /f "usebackq skip=1 delims=" %%a in ("your text file.txt") do >>newfile echo %%a move "newfile" "your text file.txt" This will skim out any empty lines, if the empty lines are important steps can be taken to preserve them. Here is a way that involves the antiqued edlin dos executable that isn't and won't be present in 64 bit systems. I don't recommend this method but I will outline it any way. start /b /wait cmd /c "(echo 1&echo %num%&echo exit)|edlin file.txt&exit" The reason I used start is to try and kill off ntvdm(nt virtual dos machine) without actually killing off the process in case it is in use. The edlin method has quite a few drawbacks, to mention a couple it can't handle long file names and always leaves a ^z end of file character at the end of the file.

edlin holy cow! ===================================== If at first you don't succeed, you're about average. M2

Thanks for help, it is working and ready for use :) One thing is weird though: If there are no files of specified type, it takes all ragardles the type (I expected it to do nothing) It is shortened but he important lines are there : @echo off SETLOCAL ENABLEDELAYEDEXPANSION set typy=(*.doc *.xls *.txt) set slozka=%~n0 if not exist %slozka% md %slozka% if not exist "%slozka%\log.txt" ( echo 0 > "%slozka%\log.txt" echo LOG pro %~n0%~x0 >> "%slozka%\log.txt" ) set /p cislo=<"%slozka%\log.txt" set /a cislo=(cislo+1) >newfile echo %cislo% for /f "usebackq skip=1 delims=" %%a in ("%slozka%\log.txt") do >>newfile echo %%a move "newfile" "%slozka%\log.txt" if not exist rar.exe ( echo Nenalezen soubor rar.exe >> %slozka%\log.txt goto konec ) set soubory= for %%f in %typy% do ( set soubory=!soubory! "%%f" ) rar a "%slozka%\%cislo%. zaloha - %date%.rar" %soubory% :konec