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December 12, 2015 05:58
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Track changes to a website! Run it in a cron.
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| # Track changes to a website, dude! | |
| require 'open-uri' | |
| require 'digest/md5' | |
| require 'tempfile' | |
| ############### Dem helper methods yo | |
| def write_md5(md5, filename) | |
| File.open(filename, 'w') { |f| f.write(md5) } | |
| end | |
| def read_md5(filename) | |
| md5 = '' | |
| File.open(filename, 'r') { |f| md5 = f.read } | |
| md5 | |
| end | |
| def notify | |
| # Send yourself an email or something | |
| puts "OMGZOR!!!1!! Can I has change?? YES ploxx" | |
| end | |
| ############### Da badass skript man | |
| # Target URL | |
| URL = 'http://rubylearning.com/satishtalim/ruby_exceptions.html' | |
| # File to store MD5 | |
| FILENAME = 'last_md5.txt' | |
| # Download HTML into a temp file and create a md5 digest | |
| temp = Tempfile.new('temp') | |
| begin | |
| temp.write(open(URL).read) | |
| md5 = Digest::MD5.file(temp.path).hexdigest | |
| ensure | |
| temp.close | |
| temp.unlink | |
| end | |
| # If there's something new, save it and let me know | |
| if File.exists?(FILENAME) | |
| last_md5 = read_md5(FILENAME) | |
| unless md5.eql?(last_md5) | |
| write_md5(md5, FILENAME) | |
| notify | |
| end | |
| else | |
| write_md5(md5, FILENAME) | |
| end |
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