Iterate all files in a directory using a 'for' loop

How can I iterate over each file in a directory using a for loop?

And how could I tell if a certain entry is a directory or if it's just a file?

This lists all the files (and only the files) in the current directory:

for /r %i in (*) do echo %i

Also if you run that command in a batch file you need to double the % signs.

for /r %%i in (*) do echo %%i

(thanks @agnul)

Iterate through...

• ...files in current dir: for %f in (.\*) do @echo %f
• ...subdirs in current dir: for /D %s in (.\*) do @echo %s
• ...files in current and all subdirs: for /R %f in (.\*) do @echo %f
• ...subdirs in current and all subdirs: for /R /D %s in (.\*) do @echo %s

Unfortunately I did not find any way to iterate over files and subdirs at the same time.

Just use cygwin with its bash for much more functionality.

Apart from this: Did you notice, that the buildin help of MS Windows is a great resource for descriptions of cmd's command line syntax?

Also have a look here: http://technet.microsoft.com/en-us/library/bb490890.aspx

To iterate over each file a for loop will work:

for %%f in (directory\path\*) do ( something_here )

In my case I also wanted the file content, name, etc.

This lead to a few issues and I thought my use case might help. Here is a loop that reads info from each '.txt' file in a directory and allows you do do something with it (setx for instance).

@ECHO OFF
setlocal enabledelayedexpansion
for %%f in (directory\path\*.txt) do (
  set /p val=<%%f
  echo "fullname: %%f"
  echo "name: %%~nf"
  echo "contents: !val!"
)

*Limitation: val<=%%f will only get the first line of the file.

There is a subtle difference between running FOR from the command line and from a batch file. In a batch file, you need to put two % characters in front of each variable reference.

From a command line:

FOR %i IN (*) DO ECHO %i

From a batch file:

FOR %%i IN (*) DO ECHO %%i

This for-loop will list all files in a directory.

pushd somedir
for /f "delims=" %%f in ('dir /b /a-d-h-s') do echo %%f
popd

"delims=" is useful to show long filenames with spaces in it....

'/b" show only names, not size dates etc..

Some things to know about dir's /a argument.

• Any use of "/a" would list everything, including hidden and system attributes.
• "/ad" would only show subdirectories, including hidden and system ones.
• "/a-d" argument eliminates content with 'D'irectory attribute.
• "/a-d-h-s" will show everything, but entries with 'D'irectory, 'H'idden 'S'ystem attribute.

If you use this on the commandline, remove a "%".

Hope this helps.