Lazy update is a script for automatically keeping programs up-to-date. It reads a list of programs to look for and instructions on how to install them. You can for instance tell cron to run lazy periodically. It also keeps a list of what versions has been installed, so it won't try to install the same version more than once. All versions it has installed are listed. It will not check for versions installed by other means than lazy (it's lazy, right?) so it might be a good idea to fill this file with what you have to start with. There is also a configuration file called ~/.lazyrc that contains some global settings for lazy.