update.sh for tvheadend

#!/bin/bash
source_m3u=""
source_icon=""

channelopt=""
interface="eth0"
networklabel="mybouquet"
while test $# -gt 0
do
    case "$1" in
        --help)
            echo "options:"
            echo "--channels              create tvheadend channels, not only muxes and services"
            echo "--networklabel <Label>  set networklabel in tvheadend network, default is mybouquet"
            echo "--interface <Label>  set interface in tvheadend muxes, default is eth0"
            ;;
        --channels)
            channelopt="-o channel"
            ;;
        --networklabel)
            shift
            if test $# -gt 0; then
                networklabel=$1
            else
                echo "no networklabel specified"
                exit 1
            fi
            ;;
        --interface)
            shift
            if test $# -gt 0; then
                interface=$1
            else
                echo "no interface specified"
                exit 1
            fi
            ;;
        *) echo "bad option $1"
            ;;
        esac
    shift
done

#update m3u file
m3u_filename=`basename $source_m3u`
last_modified=`curl -s -I $source_m3u | grep Last-Modified`
source_date=`echo $last_modified | cut -d':' -f2`
source_date=`date -d "$source_date" +%s`
if [ -e "$HOME/$m3u_filename" ]; then
    target_date=$(date -r $HOME/$m3u_filename +%s)
else
    target_date=0
fi
if [ "$source_date" -gt "$target_date" ]; then
    echo "new $HOME/$m3u_filename"
    rm $HOME/$m3u_filename
    wget -O "$HOME/$m3u_filename" "$source_m3u"
fi

#update icons
targetdir="$HOME/.icons"
if [ ! -e $targetdir ]; then
    mkdir $targetdir
fi
while read line
do
    if [[ $line =~ ^.*tvg-logo=\"(.*?)\" ]]; then
        filename=${BASH_REMATCH[1]}
        if [ ! -e "$targetdir/$filename" ]; then
            echo "new icon $filename"
            wget -O "$targetdir/$filename" "$source_icon/$filename"
        fi
    fi
done <$HOME/$m3u_filename


#update tvheadend channel, service, epg
#mkdir /tmp/testhts
#cd /tmp/testhts
cd $HOME/.hts/tvheadend
#rm -rf channel/*
#rm -rf epggrab/xmltv/channels/*
#rm -rf input/*
python2 $HOME/m3u2hts.py -i $interface $channelopt -o service -l "$networklabel" -c utf-8 $HOME/$m3u_filename