Grab and locally cache comments from multiple WordPress blogs

getcomments.rb

#!/usr/bin/ruby

URL_LIST = [
    'site1',           'http://example.com/comments/feed/',
    'site2',           'http://example.com/comments/feed/',
    'site3',           'http://example.com/comments/feed/',
]

position = 0
while position < URL_LIST.length
    name = URL_LIST[position]
    link = URL_LIST[position + 1]
    cmd = "wget -q -O #{name}.xml '#{link}'"
    system(cmd)
    position += 2
end