WordPress is the world’s most popular platform for building websites. WordShell  is a tool I created for working on WordPress websites from a command-line.
It works on plugins, themes, core; install, update, backup, rollback, delete, activate, deactivate etc. And much more.
It saves huge amounts of time if you are running a number of WordPress websites. Runs anywhere you can get a command-line; Mac OS X, Linux, BSDs, Solaris – and even Windows if you install the right tools.
See also: UpdraftPlus.com – WordPress backup tool .