Looping through a list of URLs in a text file and optionally stripping the schema.

run_url_list.sh

#!/bin/bash

for URL in $(cut -d, -f2 < url_list.txt)
do
    URL=$(sed -e 's/^http\(\|s\):\/\///g' <<< "$URL" )
    echo $URL
done

url_list.txt

http://www.amazon.com
https://gist.github.com
http://www.wikipedia.org/