Subj : redirection of stdout.
To   : Jasen Betts
From : Winston Smith
Date : Sun Mar 24 2002 07:05 am

>> (4dos/msdos:)  is there a way (using 4dos) to detect from inside a
>> batch file if stdout has been redirected (to a file/pipe).

WS> Under MS-DOS using a pipe creates a temporary file in your
WS> designated temporary directory that uses three dollar/currency
WS> signs as a naming convention. It would be fairly easy to scan for
WS> that.

-> so how do I access the name?

I believe it is <disk-letter>:<temp-path><wildcard>.$$$
  for example,
     C:\TMP\*.$$$
  or
     C:\WINDOWS\TEMP\*.$$$

....but I haven't tried to crash MS-DOS I/O in a while, now.


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