WP-CLI is the command-line interface for WordPress. It allows to set up WordPress sites, install plugins, themes, edit options, back up the database, search and replace strings and a lot more straight from the terminal. See the full list of WP-CLI commands here.
Chap includes 2 WP-CLI commands since version 1.13.5:
WP-CLI
Display Chap version wp chap versionWP-CLI
Compile Semantic UI wp chap compile