#!/bin/sh -u
# A weather script to show the current temperature in Ottawa.
#------------------------------------------------------------------
# Syntax:     $0     (no command line arguments used)
#------------------------------------------------------------------
# Purpose:
#  Display the current weather for Ottawa.
#------------------------------------------------------------------
# Student Name:                 Ben Dover
# Algonquin EMail Address:      abcd0001
# Student Number:               074-210-779 
# Course Number:                NET2003  
# Lab Section Number:           014 
# Professor Name:               Ian Allen 
# Assignment Name/Number/Date:  This is a sample exercise label
# Comment:                      This is a sample.
#------------------------------------------------------------------

# Use standard search path, friendly umask, ASCII collating and sorting.
#
PATH=/bin:/usr/bin ; export PATH
umask 022
LC_COLLATE=C ; export LC_COLLATE

# Note the need to quote the URL because of the shell metacharacter.
# Save the lynx formatted output in a shell variable for later processing.
#
url='http://text.weatheroffice.ec.gc.ca/forecast/city_e.html?on-118'
page=$( lynx -dump "$url" )

# Note: we should check the contents of $page for errors here ...

# Send the saved page contents through grep twice to fetch two lines.
# Command substitution captures the line output by grep.
#
templine=$( echo "$page" | grep -A 1 -e 'Temperature:' | tail -1 )
obsline=$( echo "$page" | grep 'Observed ' )

# Echo the output through tr to compress multiple blanks into one.
#
echo "$obsline --> $templine" | tr -s ' '