Replace Guest with your username.

    ; 9fs tcp!cloud9p.org!900 /n/chat
    ; cat /n/chat/chat &
    ; while() read | sed '1s/^/Guest → /' >>/n/chat/chat


From UNIX:

Install [plan9port](https://9fans.github.io/plan9port/).


On OpenBSD:

    $ doas pkg_add plan9port


On Linux, you may have to compile from source.

    $ 9 9p -a 'tcp!cloud9p.org!900' read chat | sed "s/$/$(echo '\a')/" &
    while read l; do echo $(date -z UTC +%25H:%25M) $USER → "$l"
    done | 9 9p -a 'tcp!cloud9p.org!900' write chat