#!/usr/bin/awk -f

BEGIN {
    RS = ">"
}

/<(ftp|https?):\/\// {
    gsub(/^.*<(ftp|https?):\/\//, "")
    gsub(/\/.*$/, "")
    gsub(/[\n\r ]/, "")
    if (length($0) > 0) {
        print tolower($0)
    }
    next
}