A simple script for extracting some DOT from a wiki page and rendering as a PNG.

wikiDataflow2Diagram.sh

#!/bin/sh
curl -s "http://mywiki.me/wiki/DataFlow" > dataflow_page.html
awk '/# BEGIN/,/# END/{if(!/pattern/)print}' dataflow_page.html | \
awk '{gsub(">", ">", $0);print}' | \
awk '{gsub(""", "\"", $0);print}' | \
awk '{gsub("&lt;", "<", $0);print}' > dataflow.dot
EPOCH=`date +"%s"`
dot -Tpng dataflow.dot -o dataflow-${EPOCH}.png
gimp dataflow-${EPOCH}.png