🚀 go-pugleaf

In a recent article I wrote:

>>> Try     if exist d:\path\nul goto success
>>> to test for the existence of d:\path
>>
>>Unfortunately, this does NOT always work.  The problem involves having some
>>(usually network) drivers loaded in memory, which hinder the performance of

>A further way of determining the existence of a directory can be based
>on whether or not there is any output produced by DIR /B
>
>dir /B %1 >tmp1
>copy tmp1 tmp2 >\nul
>if not exist tmp2 echo DIRECTORY NOT FOUND
>
>This is based on DIR /B producing no output when a directory does not exist.

Yet another DOS method for determining the existence of a directory, though
I'd be surprised if it were found to work with read-only media:-

    replace c:\nul %1 >\nul
    if errorlevel 3 echo DIRECTORY %1 NOT FOUND

Or for something more robust, try DIR'ing the directory (or file):-

    dir /ad %1 | find "file(s)" >>tmp1.bat
    call tmp1
    if "%error%"=="" echo DIRECTORY %1 NOT FOUND

Where tmp1.bat initially contains just SET ERROR= with no trailing <CR>.
--
John Savage               koala@sydney.dialix.com.au