🚀 go-pugleaf

In article <1990Nov19.212134.6012@polyof.poly.edu> karl@polyof.poly.edu (Karl H. Muhlbach, Staff) writes:
>

>	I am writing a little utility but I need to get some
>insight on something.  I was wondering how DOS accomplishes the dir command.
>Is it done via the DOS system calls or is it bios related?  The reason I

Dir is a built in command for command.com.  Who knows what it does?

>ask is that part of my utility is to read a diskette and reference every
>file on the diskette to see its file attributes (ie. size, date,
>permissions, etc.). Unlike DOS I need to traverse the tree structure to
>recursively reference every file.  DOS will only indicate that a
>particular file is a subdirectory and not change dir to reference the files

Use the DOS functions FindFirst and FindNext.  When you find a 'file' with
it's directory attribute then you do another (recursive) walk of that
directory.  Any decent DOS internals book will have the calling information
for them.

>some light on this for me.  This aspect and its speed performance are the
>only things holding back the efficient completion of the utility.  I have
>it working with referencing the disk using the ftw call but there must be a
>more efficient and quicker method.

Speed should be sufficient using the above method.

Good luck,
	John D. Mitchell
	johnm@cory.Berkeley.EDU