SIMPLE CHAT SYSTEM

At one point, during the course of the day while I was mindlessly
browsing bboard on SDF, I came across a script found and slightly
modified by userfxnet.  It's a very simple chat system for the users of
shared unices; it looks like this:

#!/bin/bash
# Simple chat system (canonical.org/~kragen)
chan=/tmp/yapchat
echo "^C to exit chat, ^D to hide. (CTRL+C, CTRL+D)" >&2
tail -F "$chan" & tailpid=$!
trap 'kill "$tailpid"' 0
while IFS='' read -er line; do echo "[$USER] $line"; done >> "$chan"

Neat, right?  You're supposed to chmod a+w /tmp/yapchat so that
everyone can write in this file.


                                        f6k, 2o23/o9/o2