This also explains the Ctrl-D used to end input e.g. when using cat from stdin: https://en.wikipedia.org/wiki/End-of-Transmission_character https://en.wikipedi

This also explains the Ctrl-D used to end input e.g. when using cat from stdin: https://en.wikipedia.org/wiki/End-of-Transmission_character https://en.wikipedia.org/wiki/End-of-Transmission_character It also expl^H^H^H^H^H^H