A simple example of how to use cron and bash to generate prowl notifications

morningreport.sh

#!/bin/sh

# Kenneth Finnegan, 2012
# kennethfinnegan.blogspot.com

# Posts growl notifications to iOS device using prowl & curl
#
# To have run by cron at 8:30 daily, add the following to your crontab
# 30 8 * * * /mnt/storage/scripts/morningreport.sh

# 2012 01 14: 	Initial revision

# Fill in with your own API key here
APIKEY=2541XXXX4d77
# Make up a cache filename in /tmp/ based on our PID
CACHE=/tmp/$$.cache.txt
# Where to find statistics about lighttpd web server
LOGDIR=/mnt/storage/logs
ACC_YESTERDAY=$LOGDIR/lighttpd.access.log.yesterday
ACC_TOTAL=$LOGDIR/lighttpd.access.log.total

# Generate all text and dump into temp file CACHE

tail -n 1 $ACC_TOTAL | \
	awk '{print "Web traffic: " $3 " hits from " $2 " IPs "}' > $CACHE
df / | tail -n 1 | awk '{print "Root fs usage: " $5 " "}' >> $CACHE
df /mnt/storage/ | tail -n 1 | \
	awk '{print "SD card fs usage: " $5 " "}' >> $CACHE

# Post notification to Prowl using curl

curl https://api.prowlapp.com/publicapi/add \
	-F apikey=$APIKEY \
	-F application=Chumby \
	-F event="Morning Report" \
	-F description="`cat $CACHE`"

rm $CACHE