I have an assignment to do. Can you please point out if there is a error in the following code. Error message appears telling Error: Unknown option Please Select The Dr. Use --help to list options. thank you in advance dialog --backtitle "Linux Shell Script Tutorial " --title "Main\ Menu" --menu "Move using [UP] [DOWN],[Enter] to\ http://www.freeos.com/guides/lsst/maspc.htm (9 of 17) [17/08/2001 17.42.32] Linux Shell Script Tutorial Select" 15 50 3\ Date/time "Shows Date and Time"\ Calendar "To see calendar "\ Editor "To start vi editor " 2>/tmp/menuitem.$$ menuitem=`cat /tmp/menuitem.$$` opt=$? case $menuitem in Date/time) date;; Calendar) cal;; Editor) vi;; esac