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Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!mailrus!ames!haven!udel!burdvax!starsend!floyd
From: floyd@starsend.UUCP (Floyd Miller)
Newsgroups: alt.msdos.programmer,comp.sys.ibm.pc.programmer
Subject: Redirecting output of DOS batch files
Message-ID: <0019@starsend.UUCP>
Date: 2 Mar 90 22:57:35 GMT
Followup-To: alt.msdos.programmer
Organization: Woodward McCoach, Inc.
Lines: 38

I have a few batch files that run pipelined programs,
searching for a pattern, extracting fields and sorting.
They make life a bit easier by elliminating the need
to retype long command lines.

However, sometimes I want to run the final output through
a pager (like "more") or save the results in a file.
I try to run:  filter.bat | more
More doesn't do anything.
So I try:      filter.bat > f.out
f.out gets created with no data while the output
of filter.bat comes pouring out on my screen.

Apparently, REDIRECTING DOESN'T WORK ON BATCH FILES.

I was surprised mostly by the fact that it took up until
now for me to discover this deficiency in DOS.

I think that a program which overlays stderr onto stdout
and then invokes the batch file would allow redirection
of the batch file output.  Then you would run the batch
file as:

       redir prog.bat
  or   redir prog.bat > file.out
  or   redir prog.bat | more

I will try this.  And, if there is interest I'll post
"redir" if it works.  But is there an easier way?
Perhaps without having to use a separate program to
invoke the batch file?

*******   *****************************************
*****  ************************* Floyd Miller
***  *************** floyd@starsend.UUCP
*  ********* floyd%starsend@PRC.Unisys.com
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