diff websites
sitediff.sh will download a web page using curl, and check it against a previously downloaded copy, reporting whether it has changed or not.
sitediff needs a folder to store copies of the web pages it's stalking, and by default that folder is ~/.sitediff_prev. It also needs a config file, which by default is ~/.sitediff_config.
The config file is a list of valid URLs, each on its own line, with a newline at the end.