Modified Bashpodder

#!/bin/bash
# By Linc 10/1/2004
# Find the latest script at http://lincgeek.org/bashpodder
# Revision 1.21 12/04/2008 - Many Contributers!
# If you use this and have made improvements or have comments
# drop me an email at linc dot fessenden at gmail dot com
# and post your changes to the forum at http://lincgeek.org/lincware
# I'd appreciate it!
#
# Last modified 10/08/2010
#
# This a modified version of Bashpodder by Mattias Hermansson.
#
# List of changes:
#  * No playlist is created after download
#  * If no podcasts are downloaded, the datadir is removed
#  * Podcasts prefixed with # in bp.conf are ignored.

# Make script crontab friendly:
cd $(dirname $0)

# datadir is the directory you want podcasts saved to:
datadir=$(date +%Y-%m-%d)

# create datadir if necessary:
mkdir -p $datadir

# Delete any temp file:
rm -f temp.log

# Read the bp.conf file and wget any url not already in the podcast.log file:
while read podcast
do
    if [ `expr match "$podcast" '[#]*'` = 0 ] # Only check podcasts that don't begin with a #.
    then
        file=$(xsltproc parse_enclosure.xsl $podcast 2> /dev/null || wget -q $podcast -O - | tr '\r' '\n' | tr \' \" | sed -n 's/.*url="\([^"]*\)".*/\1/p')
        for url in $file
        do
            echo $url >> temp.log
            if ! grep "$url" podcast.log > /dev/null
            then
                wget -t 10 -U BashPodder -c -O $datadir/$(echo "$url" | awk -F'/' {'print $NF'} | awk -F'=' {'print $NF'} | awk -F'?' {'print $1'}) "$url"
            fi
        done
    fi
done < bp.conf

# Move dynamically created log file to permanent log file:
cat podcast.log >> temp.log
sort temp.log | uniq > podcast.log
rm temp.log

#Remove datadir if it's empty.
if [ ! "$(ls -A $datadir)" ]; then
    rmdir $datadir
fi