On Sunday,  5 January 2003 at 16:16:22 +0100, Roman Neuhauser wrote:
> # [EMAIL PROTECTED] / 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?

Yes, exactly.

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