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Asked by Don_T in CGI Scripting, Bourne-Again Shell (bash), Bourne Shell (sh)
Hi
I'm creating a pipeline to process a HTML form on a server. I read the text input to a file via $QUERY_STRING (works), do some processing in Python and Prolog (works) and after that I want the script to display the results in a HTML page. How can that be done? Echoing doesn't seem to work. Do I have to set the STDOUT somehow and is it possible at all?
Using PHP would be a lot simpler, but shell_exec() doesn't execute the subprocesses of the bash script (Python/Prolog) properly. F.e. for the Prolog script it just displays the output of the write('') - instructions, but does not actually execute the calculations/manipulate the according files.
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#!/bin/sh
echo $QUERY_STRING | sed -r "s/.*=//g" | sed "s/+/ /g" ... > input.txt
echo 'Preprocessing'
python ...
sh ...
swipl ...
echo 'Processing'
swipl ... (creates out.txt)
...
echo 'Done.'
->now display out.txt to the user
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20091111-EE-VQP-89 - Hierarchy / EE_QW_3_20080625
