#!/bin/bash

url="<url>"
key="<key>"
user="<user name>"

if [ "$1" = "help" ]
then
  echo "To read message board:"
  echo "$0"
  echo ""
  echo "To post a message:"
  echo "$0 'Hello World'"
  exit 1
fi

if [ $# -lt 1 ];
then 
  curl -s "${url}?key=${key}&user=${user}"|grep -v -e '^<' -e '^ '
else
  msg="$(echo $*|sed 's/ /%20/g')"
  curl -s "${url}?key=${key}&user=${user}&msg=${msg}"
  curl -s "${url}?key=${key}&user=${user}"|grep -v -e '^<' -e '^ '
fi