Date: Sun, 5 Jan 2003 16:16:22 +0100 From: Roman Neuhauser <neuhauser@bellavista.cz> To: Greg 'groggy' Lehey <grog@FreeBSD.org> Cc: FreeBSD Questions <questions@FreeBSD.org> Subject: Re: What are the SMTP rules for sending mail to FreeBSD Message-ID: <20030105151622.GC669@freepuppy.bellavista.cz> In-Reply-To: <20030104033246.GC12462@wantadilla.lemis.com> References: <3E0DBCFC.5040907@quadtelecom.com> <5.1.1.6.2.20021228111607.0243f108@mail.go2france.com> <20021229002511.GD92510@wantadilla.lemis.com> <20021229174612.GR348@freepuppy.bellavista.cz> <20021230005622.GE19243@wantadilla.lemis.com> <20030102154044.GK348@freepuppy.bellavista.cz> <20030102155305.GL348@freepuppy.bellavista.cz> <20030104033246.GC12462@wantadilla.lemis.com>
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# grog@FreeBSD.org / 2003-01-04 14:02:46 +1030:
> On Thursday, 2 January 2003 at 16:53:05 +0100, Roman Neuhauser wrote:
> > plus, you stuff the output in $myfile, and get the input from it as
> > well. How's that supposed to work? :)
>
> Heh. You're looking at this section, no doubt:
>
> cat > $myfile
> server=`egrep -i < $myfile "In: [HE][HE]LO"|sed 's/^.*LO *//' `
> if [ "$server" = "" ]; then
> server=`egrep -i < $myfile "^Subject.*errors from "|sed 's/^Subject.*errors from //; s:\[.*::g' `
> fi
>
> Confusing, isn't it? The thing is, this program is a filter. The
> first line copies stdin to $myfile for future (multiple) readings. If
> it weren't a filter, the cat command would still read from stdin, so
> if it were a terminal, it would just appear to hang.
Ok, so you pipe the Postfix-generated message into B which slurps it
into $myfile and that is where you access it... I'm just a luser, so
excuse me if this is nonsense, but do you do that because stdin is
not seekable?
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