dbfunctions

UNIX[1].shell范例精解(第4版)_code

function addon () {     # Function defined in file dbfunctions
	while true
	do
		echo "Adding information "
		echo "Type the full name of employee "
		read name
		echo "Type address for employee "
		read address
		echo "Type start date for employee (4/10/88 ) :"
		read startdate
		echo $name:$address:$startdate
		echo -n "Is this correct? " 
		read ans
		case "$ans"  in
		[Yy]*)
				echo "Adding info..."
				echo $name:$address:$startdate>>datafile
				sort -u datafile -o datafile
				echo -n "Do you want to go back to the main menu? "
			read ans
			if [[ $ans == [Yy] ]]
			then

				return     # Return to calling program
			else

				continue   # Go to the top of the loop
			fi
			;;
		*)
		echo "Do you want to try again? "
		read answer
		case "$answer" in
		[Yy]*) continue;;
		*) exit;;
		esac

			;;
	esac
done
}	 # End of function definition