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From: Pekka Niiranen <pekka DOT niiranen AT wlanmail DOT com>
Subject:  Re: Strange behaviour with output redirection (MORE information, Bug in awk.exe?)
Date:  Sun, 08 May 2005 14:49:58 +0300
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Message-ID: <d5ktvq$194$1@sea.gmane.org>
References:  <d5flgq$rk8$2 AT sea DOT gmane DOT org>
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Hi again,

I managed to isolate the problem to the awk.exe.
Calling like this:

export FAWK; FAWK="awk -F^ --compat --source="
${FAWK}/"SIMU_included/{print \$3}" subst$1 >${TMPDIR}/$$
[ -s ${TMPDIR}/$$ ] && < ${TMPDIR}/$$ read SIMU

works only occassionally. But calling awk without redirection
first works 100% of the time.

export FAWK; FAWK="awk -F^ --compat --source="
${FAWK}/"SIMU_included/{print \$3}" subst$1
${FAWK}/"SIMU_included/{print \$3}" subst$1 >${TMPDIR}/$$
[ -s ${TMPDIR}/$$ ] && < ${TMPDIR}/$$ read SIMU

What is happening here? I am using the 1.5.16-1 version of Cygwin.

-pekka-

Pekka Niiranen wrote:
> Hi there,
> 
> I am using the following convention to set variables in Bash:
> 
> awk -f /"SIMU_included/{print \$3}" subst$1 >${TMPDIR}/$$
> [ -s ${TMPDIR}/$$ ] && < ${TMPDIR}/$$ read SIMU
> 
> For some reason parameter "SIMU" gets set randomly.
> Could this be due W2K's buffering in creation of
> temporary file ${TMPDIR}/$$? i.e read happens before file
> is written on disk?
> 
> For some reason setting "ntsec" seems to help but this does not
> explain the random success of file reading.
> 
> -pekka-
> 
> 


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