#!/bin/bash
# OPS435 - lab00
# Written by John Selmys - May 2008
# Modified by Murray Saul - June 2008
# Seneca College, Toronto
#
# BASH script to compute the day of the week on which someone was born
#
clear
read -p "Greetings, I'm Linux. What's your name? " name
echo
echo Hi $name.
read -p "Do you want me to compute the day of the week you were born on? (yes|no) " answer
answer=$(echo $answer | tr 'a-z' 'A-Z')
if [ "$answer" = YES ]
then
	echo 
	echo "Great! But first I'll need some information."
	read -p "Please tell me the year in which you were born: " year
	echo
	read -p "Now tell me the number of the month in which you were born: " month
	echo
	read -p "Finally, I need to know the day of the month in which you were born: " day
	echo
	echo "Thanks. Now I'll compute the day of the week that you"
 	echo "were born on, but it may take some time so please be patient."
	echo -n "calculating "
        sleep 1
        echo -n "."
        sleep 1
        echo -n "."
        sleep 1
        echo -n "."

	fulldate=$year-$month-$day
	weekday=$(date -d $fulldate +%A)
	echo
	echo "OK, I got it. You were born on a $weekday"
	echo
	sleep 2
	echo "Now, if you don't believe me, ask someone that witnessed it..."
	echo
	echo See you later.
else
	echo Goodbye.
fi