sh - select; list

#!/bin/bash
# Set PS3 prompt
PS3="Enter the space shuttle to get quick information : "

# set shuttle list
# exit option
select shuttle in columbia endeavour challenger discovery atlantis enterprise pathfinder exit
do
    case $shuttle in
        columbia)
            echo "--------------"
            echo "Space Shuttle Columbia was the first spaceworthy space shuttle in NASA's orbital fleet."
            echo "--------------"
            ;;
        endeavour)
            echo "--------------"
            echo "Space Shuttle Endeavour is one of three currently operational orbiters in the Space Shuttle."
            echo "--------------"
            ;;
        challenger)
            echo "--------------"
            echo "Space Shuttle Challenger was NASA's second Space Shuttle orbiter to be put into service."
            echo "--------------"
            ;;
        discovery)
            echo "--------------"
            echo "Discovery became the third operational orbiter, and is now the oldest one in service."
            echo "--------------"
            ;;
        atlantis)
            echo "--------------"
            echo "Atlantis was the fourth operational shuttle built."
            echo "--------------"
            ;;
        enterprise)
            echo "--------------"
            echo "Space Shuttle Enterprise was the first Space Shuttle orbiter."
            echo "--------------"
            ;;
        pathfinder)
            echo "--------------"
            echo "Space Shuttle Orbiter Pathfinder is a Space Shuttle simulator made of steel and wood."
            echo "--------------"
            ;;
                exit)
                    echo "Bye!"
                        break
                        ;;
        *)
            echo "Error: Please try again (select 1..8)!"
            ;;
    esac
done