How much energy does that steak have?

While studying for the second part of the LPIC 1 Certificate(LPI102), I started messing about with bash scripts. I still way prefer python, but bash is handy to whip together semi useful stuff quickly.
Anyhow, this script quite ineffeciently gets the kilocalorific (kcal) value of (some) foods:

#!/bin/bash
searchterm=$1
data=$(curl -# 'http://www.med-surfer.de/kalorientabelle/kalorientabelle.php3')
echo $data | egrep -i "
.*" | sed -e "s/<\/td>/<\/td>\n/g" | egrep -i "value='.*kcal.*'>" | sed -e "s/.*value='//g" | sed -e "s/'><\/td>$//g" | sed -e "s/\.\+/ /g" | sed -e "s/kcal/kcal pro 100g hat/g" | iconv -f iso-8859-1 | grep -i $searchterm

Of course, you can see immediately that this is limited to the html formatting on the page above - which in turn means you have to enter your query auf deutsch. Furthermore, you could probably reduce the number of times that sed is called significantly. And you could grep more than just one foodstuff quite easily either. But this at least helped to get me up to speed for the 102.

By the way, everything after the echo $data above is on one single line - the blog format might split it up. Otherwise, do:

1. wget http://www.foxhall.de/downloads/kal.sh
2. chmod +x kal.sh
3. ./kal.sh apfel

I'd be interested in hearing how I could improve it - not what the script does, but how it does it - e.g. reducing the numbers of grep and sed calls.