asciinema

asciinema - Record and share your terminal sessions, the simple way
  1. Install 
    # on MacOS
$ brew install asciinema

# Ubuntu
$ sudo apt-add-repository ppa:zanchey/asciinema
$ sudo apt-get update
$ sudo apt-get install asciinema

# pip
$ sudo pip3 install asciinema
  2. Record 
    $ asciinema rec
  3. stop recording; <html><kbd>CTRL</kbd></html> + <html><kbd>D</kbd></html>
  4. Manage recording (Optional) 
    $ asciinema auth

References