DOS ain't dead

Windows has a CD environment variable for the current working directory.

https://ss64.com/nt/syntax-variables.html

I came up with a couple of ways to set this variable on DOS.

Below is one that uses DEBUG.COM to edit SETCD.BAT

C:\>type mksetcd.bat
echo SET CD=>setcd.bat
cd>>setcd.bat

echo F 100 L 200 20 >debug.scr
echo N setcd.bat >>debug.scr
echo L 100 >>debug.scr
echo M 109 L 200 107 >>debug.scr
echo W >>debug.scr
echo Q >>debug.scr

debug <debug.scr

I could use it like so:

C:\TEMP>\mksetcd.bat
C:\TEMP>setcd.bat
C:\TEMP>echo %CD%
C:\TEMP



Do you know of a better way?

> Windows has a CD environment variable for the current working directory.
>
> https://ss64.com/nt/syntax-variables.html
>
> I came up with a couple of ways to set this variable on DOS.
>
> Do you know of a better way?

what about NSET?

> Windows has a CD environment variable for the current working directory.
>
> Do you know of a better way?

FreeDOS' FreeCOM (and also 4DOS, I think) have "%_CWD%" for this purpose.


if "%CD%"=="" if not "%_CWD%"=="" set CD=%_CWD%
if "%CD%"=="" goto error


> FreeDOS' FreeCOM (and also 4DOS, I think) have "%_CWD%" for this purpose.
>
>
> if "%CD%"=="" if not "%_CWD%"=="" set CD=%_CWD%
> if "%CD%"=="" goto error
>

Thanks for sharing this knowledge, rugxulo!

> what about NSET?

Thanks, i didn't know about NSET. I see the author's site has other goodies:

https://www.horstmuc.de/main.htm

p.s.

NSET 2.1

https://www.horstmuc.de/horst.htm

NSET 1.2

http://annex.retroarchive.org/cdrom/psl-jan95/DOS/UT_DSKFI/HORST_1/