How do I get the last part of directory from a command line

Question

How do I store the last part of directory in a variable?

For example I have the following path: A\B\C\D, I want to store D in variable like file_name=D.

Answer 1

Because of your Windows tag, I assume your cmd.exe has extensions built-in. If that is the case, you can use two of FOR's special substitution variable references:

Given a variable %A, containing a path and file:

%~nA will output the file name, %~xA will output the file extension. The following example uses the pipe character | as a delimiter. The pipe is an invalid character for files and paths and should not appear in a path. This will allow for spaces in paths and filenames. See FOR /? for full details.

C:\>SET FSPATH=C:\WINDOWS\Temp\file.txt
C:\>echo %FSPATH%
C:\WINDOWS\Temp\file.txt
C:\>FOR /F "delims=|" %A IN ("%FSPATH%") do echo %~nxA
file.txt

Alternatively, should you not have extensions in your cmd.exe, you can use delims=\, count the directory separators and split your path/file string based on that number.

Edit: Per your comment about the error. Above is an example on the command line. If you want to perform the same within a batch script, you need to double the % on the the variables:

FOR /F "delims=|" %%A IN ("%FSPATH%") do echo %%~nxA

The %%~nxA variable would then contain the file name and extension and can be used throughout your script.

Answer 2

Give this a try:

for %f in (A\B\C\D) do set var=%~nxf