Make STAR WARS message greet you when you open the terminal

I am a great fan of STAR WARS like many of you out there. So I decided to write a script which greets me with star wars message every time I open my Terminal to code.
Suppose say you are using Bash, when you open your terminal the file ~/.bashrc will run. Similarly if you are using Zsh => ~/.zshrc will run. So basically I can just put an echo statement in that to make it greet me every time I open my terminal. Today lets do something more interesting. Someting like this:

To get this you can just download this gist and add the contents in it to ~/.bashrc or ~/.zshrc or ~/.cshrc ..etc depending on which shell you are using. Or you can just copy the following and paste it in ~/.bashrc or ~/.zshrc or ~/.cshrc

	function print_element {
	while [ $cols -ge 1 ]
	do
	printf "$element"
	cols=`expr $cols - 1`
	done
	}
	function print_sentence {
	cols=`tput cols`
	size=`expr "$sentence" : '.*'`
	cols=`echo "($cols-$size)/2"|bc`
	cols=`expr $cols - 1`
	element=' '
	print_element
	echo $sentence
	}
	cols=`tput cols`
	element='~'
	print_element
	#PRINTING STAR WARS
	if [ `tput cols` -le 80 ]
	then
	if [ $# -ne 1 ]
	then
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo " 8888888888 888 88888 "
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo " 88 88 88 88 88 88 "
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo " 8888 88 88 88 88888 "
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo " 88 88 888888888 88 88 "
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo "88888888 88 88 88 88 888888"
	echo ""
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo "88 88 88 888 88888 888888"
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo "88 88 88 88 88 88 88 88 "
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo "88 8888 88 88 88 88888 8888 "
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo " 888 888 888888888 88 88 88 "
	cols=`tput cols`
	cols=`echo $cols/2-17|bc`
	element=' '
	print_element
	echo " 88 88 88 88 88 8888888 "
	echo ""
	fi
	#PRINTING STAR WARS DONE
	fi

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