Make a server that multiple people can use to chat.  This is basically IRC.
For a client ... just use telnet or your client.
    telnet euclid 12345
When one person types, the rest should see it.

Poll man page:  https://linux.die.net/man/3/poll
Example poll code: http://www.csd.uwo.ca/~mburrel/teaching/3357/poll.html



Points	Feature
50	Everyone can talk.  Uses poll.
10	The "name" command works.  Every chatter's messages have a name associated with it.
10	The quit command works.  When a person quits, a message is broadcast saying the person is logged of.   Then the connection is closed.
10	File transfer!  You can send a file to/from the server.
3	There is a whisper command.
3	There is a kill-that-dude command.
3	Can cause Macintosh computers to crash on command.
3	There is a status command that lists current users.
3	Logging all messages.
3 	Change font color.  Look up "xterm color"
5	Expandable data structs (arrays or linked lists grow)
-30 	Killing any client kills the server.  Test this.
-30	Don't make me mad.
-30	Lots of duplicate code.
-500	Fork bomb the server

This is out of 75 points.  Maximum 80 points.
Minus 5 points per day after due date of Wed Apr 25th at 4pm.
Zero points when the final is given.