Check if exist new files and update txt file list

More specifically:

   @dir /b /s "c:\myfolder\*.*">files.txt

As for checking for new files, your best bet would be something like this:

   for /f "delims=" %%I in ('dir /b /s "c:\myfolder\*.*"') do (
      find "%%~I" "files.txt" >nul
      if %errorlevel% neq 0 @echo %%~I>>"files.txt"
   )

Hello,

Caudax, i dont want a batch that simply puts all the filenames in the directory in the files.txt becouse i need to keep in files.txt all the filenames that passed in c:\myfolder, even if they are no longer there.

InteractiveMind , i tested your solution and the first part is everything ok but the part of checking for new files doesn't seem to work. It doesn't add the new files to files.txt.

Thanks for the help so far.

Just to be sure I understand what you're trying to do, please confirm this is "logically" what you want to achieve:

Initialization conditions:  Create Files.txt with an initial list of all files in C:\MyFolder and its subdirectories.

Now, on each subsequent run:

(1)  Create a file "CurrentFiles.txt" that list all of the files currently in C:\MyFolder and its subdirectories.

(2)  Remove from "CurrentFiles.txt" any files that are currently in "Files.txt"  (at the end of this step only NEW files will be listed in "CurrentFiles.txt"

(3)  Append "CurrentFiles.txt" to "Files.txt"  (at the end of this step Files.txt will have everything it previously had -- so your requirement to keep files "even if they are no longer there" is met -- plus any new files)

Assuming that's what you want to do, there are several ways to do it.  But a couple of questions:  (1)  do you want each file to have the complete pathname, or is a simple directory listing (like Caudax's command produces) good enough?, and (2) if you have the files listed with pathnames, do you want the list sorted?  (this would be an optional 4th step - easily done with any of several free utilities)

My solution had one slight problem, which is related to what's called "delayed expansion".

Firstly, of course, you must run this line:

   @dir /s /b "c:\myfolder\*.*" >files.txt

Then, in a batch file, use this:

@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%I in ('dir /b /s "c:\myfolder\*.*"') do (
   find "%%~I" "files.txt" >nul
   if %errorlevel% neq 0 @echo %%~I>>files.txt
)

Hello again,

InteractiveMind, i tested your solution and its perfect. It's exactly that what i was needing.
One last question: Is it possible to make the files.txt with all the filenames but without the path just the filename ?

Thanks for all the help.
Special thanks to InteractiveMind.

two letters: the modifiers n and x for name and extension.  Of coarse, the find will also have to find based on what you put in the file instead of the total name:


:: this version prints the echo to the screen as it runs, for a poor man's progress report
for /f "delims=" %%K in ('dir /b /s "c:\myfolder\*.*"') do find "%%~nxK" "files.txt" >nul || echo %%~nxK>>"files.txt"



:: this version doesn't
echo off
for /f "delims=" %%K in ('dir /b /s "c:\myfolder\*.*"') do find "%%~nxK" "files.txt" >nul || echo %%~nxK>>"files.txt"

Cheers, zawa. :-)

Your additional question has been answered by K_2K :

@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%I in ('dir /b /s "c:\myfolder\*.*"') do (
   find "%%~nxI" "files.txt" >nul
   if !errorlevel! neq 0 @echo %%~nxI>>files.txt
)

(K_2K: Nice to see you round these forums again... you seemed to go missing a few months back.... been busy?) :-)