chat participants need only have passwordless ssh login to a shared trusted host.
#just fill out the following parameters:
#first set up a chat window where chats will be displayed:
ssh $trusted_user_host "touch $chat_room; tail -f $chat_room"
#second setup another window for sending in chat messages:
while read line; do echo "$chat_username: " $line | ssh $trusted_user_host "cat -u >> $chat_room"; done;
~/Desktop$ ssh $trusted_user_host "touch $chat_room; tail -f $chat_room"
you: hey back at you
me: we are chatting without a hassle
you: we sure are
#to terminate the chat simply ctrl-c exit the loop:
#Any participant can truncate the chat history at anytime with:
ssh $trusted_user_host "echo "" > $chat_room";
#looks like this in the log:
tail: mytopic: file truncated