Asciinema

Asciinema (formerly ascii.io) is a free and open source solution for recording terminal sessions and sharing them on the web.

Asciinema (formerly ascii.io) is a free and open source solution for recording terminal sessions and sharing them on the web. It aims to be a 'go to' place for every command-line user who wants to share his skills with others. Or putting it differently, it's a place to show off your geekiness.