====== List Files in Directory ======

<code dos>
set src=%1

for /r %%a in (%src%) do echo %%a
</code>

====== Trim Extension from Filename ======

<code dos>
set src=%1

for /r %%a in (%src%) do echo %%~na
</code>

<code dos>
echo %~n1
</code>

===== Replace Extension =====

<code dos>
set src=%1

for /r %%a in (%src%) do echo %%~na.txt
</code>