full RSS reader script

#!/bin/bash
oIFS="$IFS"
IFS=","
library="/media/Library/TV Shows"
##########################
url=""
file=""

while read show rss parse tag format
do
    IFS="$oIFS"
    mkdir "/media/Library/Scripts/$show" "$library/$show"
    wget "$rss" -O "/media/Library/Scripts/$show/feed.rss"
    while read r
    do
        url=`echo "$r" | grep -e "${parse}" | sed -e 's/ /\n/g' | grep -e "${tag}" | grep -e "${format}" | sed -e 's/.*http//' -e 's/'${format}'\$.*//' | sed -e 's/'${format}'.*//'`
        if [ "$url" != "" ]
        then
            url="http${url}${format}"
            file=`echo "${url#"http:/"}" | sed -e 's/\//\n/g' | grep -e "${format}"`
        else
            url=""
        fi
        if [ -e "$library/$show/$file" ] && [ "$url" != "" ];
        then
            true
        else
            wget "${url}" -O "$library/$show/$file"
        fi
    done <"/media/Library/Scripts/$show/feed.rss"
    IFS=","
    rm -rf "/media/Library/Scripts/$show"
done </media/Library/Scripts/showlist