#!/bin/bash
# Simple chat system (canonical.org/~kragen)
# found on SDF's BBOARD (from userfxnet)
# chmod a+w /tmp/yapchat so all users can participate
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"