how do I use cmd.exe's for /f in batch file? seems to be broken.

I am using .cmd batch files.

I have:

echo Project List as of %DATE% %TIME%>project-list.txt

echo -------------------------------->>project-list.txt

for /f %%x in ('dir/s/b d:\prj\do7z.cmd') do (

set f=%%~dpx

echo %f:~7,-1%>>project-list.txt

echo %f:~7,-1%

)

start notepad project-list.txt

there are problems with the cmd shell. if I simply do

del project-list.txt

at the top of the .cmd file, it will complain when I append (>>) that the file does not exist.

this doesn't happen in other instances when I am using append redirection (>>).

the variable f seems to change, but %f:~7% is always the same value for some reason.

trying to extract the dirname without the \ on the end.

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