select

select

 

x

 [

in

 

list

] 

do

      

commands

 

done

Korn shell only. Display a list of menu items on standard error, numbered in the order they are specified in list . If no list is given, items are read from the command line (via "$@" ). Following the menu is a prompt string (set by PS3 ). At the PS3 prompt, users select a menu item by typing its line number, or they redisplay the menu by typing RETURN. (User input is stored in the environment variable REPLY.) If a valid line number is typed, commands are executed.

Example

PS3="Select the item number:" select event in Format Page View Exit do    case "$event" in      Format) nroff $file | lp;;      Page)   pr $file | lp;;      View)   cat $file      Exit)   exit 0;;      *   )   echo "Invalid selection";;    esac done

The output of this script would look like this:

1. Format 2. Page 3. View 4. Exit Select the item number: