Search for "wikipedia" using the default search engine

A free and open source web browser.
More information: <https://developer.mozilla.org/en-US/docs/Mozilla/Command_Line_Options>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

firefox --search "{{wikipedia}}"

click the source code to copy install firefox on any operating system with command-not-found.com