asciinema

asciinema is a command-line tool for recording and live streaming terminal sessions.

Unlike typical screen recording software, which records visual output of a screen into a heavyweight video files (.mp4, .mov), asciinema CLI runs inside a terminal, capturing terminal session output into lightweight recording files in the asciicast format (.cast), or streaming it live to viewers in real-time.

Recordings can be replayed in a terminal, embedded on a web page with the asciinema player, or published to an asciinema server, such as asciinema.org, for further sharing. Live streams allow viewers to watch terminal sessions as they happen.

Learn more at https://asciinema.org/