case  $variable-name  in
     pattern1)
         command1
         ...
         ....
         commandN
         ;;
     pattern2|pattern3|pattern4)
         command1
         ...
         ....
         commandN
         ;;
     [a-z])
         command1
         ...
         ....
         commandN
         ;;
     *)
         command1
         ...
         ....
         commandN
         ;;
     esac