Shell Programming and Scripting

#!/usr/bin/ksh
#

echo -e -n "choose names as listed in the below format 1. mango 2. tango 3. rango 4.exit"
read answer
echo "$answer"

while true
do
   case $answer in
   mango) DT=$(date)
   echo "******************* $DT ***********************" 
   echo -e "Specify what options 1.add 2.subtract 3.exit"
   read input
   #
   if [ "add" = "$input" ]
   then
         echo "add"
   elif [ "exit" = "$input" ]
   then
        exit 0;;          
                        #iam getting error at the place exit 0;;
   elif [ "subtract" = "$input" ]
           echo "sub"
   else
           echo "!! must specify add or subtract"
   fi
 
   #
   tango) echo "tango"
   break;;
   #
   rango) echo "rango"
   break;;
   exit) exit 0;
   break;;
   #
   *) echo "please enter correct value" read ;;
   break;;
   # --- VBE --- adding missing done...--- #
done

*) echo "please enter correct value" ;;
esac
done

#!/usr/bin/ksh

#  Set select construct prompts for each menu level.
typeset -r MAINPROMPT="Select a main option: "
typeset -r MANGOPROMPT="Select mango option: "

#  Loop main menu until user exits explicitly.
while :
do
  print "\nMenu Title Goes Here\n"
  PS3=$MAINPROMPT  # PS3 is the prompt for the select construct.

  select option in mango tango rango exit
  do
    case $REPLY in   # REPLY is set by the select construct, and is the number of the selection.
      1) # mango
         #  Loop mango menu until user exits explicitly.
         while :
         do
           print "\nmango sub-menu title\n"
           PS3=$MANGOPROMPT
           select option1 in add substract exit
           do
             case $REPLY in
               1) # add
                  print "\nYou picked [add]"
                  break  #  Breaks out of the select, back to the mango loop.
                  ;;
               2) # subtract
                  print "\nYou picked [subtract]"
                  break  #  Breaks out of the select, back to the mango loop.
                  ;;
               3) # exit
                  break 2  # Breaks out 2 levels, the select loop plus the mango while loop, back to the main loop.
                  ;;
               *) # always allow for the unexpected
                  print "\nUnknown mango operation [${REPLY}]"
                  break
                  ;;
             esac
           done
         done
         break
         ;;
      2) # tango
         ;&  # Fall through to #3
      3) #rango
         print "\nYou picked $option"
         break
         ;;
      4) # exit
         break 2  #  Break out 2 levels, out of the select and the main loop.
         ;;
      *) # Always code for the unexpected.
         print "\nUnknown option [${REPLY}]"
         break
         ;;
    esac
  done
done

exit 0

#!/bin/bash

y=1
echo -e "Choose Names as listed in the format below.\n \
1. mango\t2. tango\t3. rango\t4. exit"
read answer


while [ $y=1 ]; do
    case ${answer} in
    "[Mm][Aa][Nn][Gg][Oo]"|1)
        echo "mango"
        mode="mango"
        echo -e "Specify an Option\n1. add\t2. sub\t3. exit"
        read option
        case ${option} in
            "[Aa][Dd][Dd]"|1)
                echo "you chose add"
                ;;
            "[Ss][Uu][Bb]"|2)
                echo "you chose sub"
                ;;
            "[Ee][Xx][Ii][Tt]"|3)
                echo "goodbye"
                exit 0
                ;;
        esac
        ;;
    "[Tt][Aa][Nn][Gg][Oo]"|2)
        echo "tango"
        mode="tango"
            echo -e "Specify an Option\n1. add\t2. sub\t3. exit"
            read option
            case ${option} in
                    "[Aa][Dd][Dd]"|1)
                            echo "you chose add"
                            ;;
                    "[Ss][Uu][Bb]"|2)
                            echo "you chose sub"
                            ;;
                    "[Ee][Xx][Ii][Tt]"|3)
                            echo "goodbye"
                            exit 0
                            ;;
        esac
        ;;
    "[Rr][Aa][Nn][Gg][Oo]"|3)
        echo "rango"
        mode="rango"
                echo -e "Specify an Option\n1. add\t2. sub\t3. exit"
                read option
                    case ${option} in
                    "[Aa][Dd][Dd]"|1)
                                echo "you chose add"
                                ;;
                    "[Ss][Uu][Bb]"|2)
                            echo "you chose sub"
                            ;;
                    "[Ee][Xx][Ii][Tt]"|3)
                            echo "goodbye"
                            exit 0
                            ;;
        esac
        ;;
    "[Ee][Xx][Ii][Tt]"|4)
        echo "goodbye"
        exit 0
        ;;
    *)
        echo"Please enter a valid answer"
        ;;
    esac
    echo "would you like to continue?"
    read reply 
    if [ "$reply"="y" ]; then
        y=1
    else
        y=0
    fi
done

#!/usr/dt/bin/dtksh

# set select construct prompts for each menu level.
typeset -r MAINPROMPT="Select a main option: "
typeset -r MANGOPROMPT="Select mango option: "

#  Loop main menu until user exits explicitly.
while :
do
   clear
  print "\nMenu Title Goes Here\n"
  PS3=$MAINPROMPT  # PS3 is the prompt for the select construct.

  select option in mango tango rango exit
  do
    case $REPLY in   # REPLY is set by the select construct,
                     # and is the number of the selection.
      1) # mango
         #  Loop mango menu until user exits explicitly.
         while :
         do
           clear
           print "\nmango sub-menu title\n"
           PS3=$MANGOPROMPT
           select option1 in add substract exit
           do
             case $REPLY in
               1) # add
                  print "\nYou picked [add]"
                  break  #  Breaks out of the select, back to the mango loop.
                  ;;
               2) # subtract
                  print "\nYou picked [subtract]"
                  break  #  Breaks out of the select, back to the mango loop.
                  ;;
               3) # exit
                  break 2  # Breaks out 2 levels, the select loop plus
                           # the mango while loop, back to the main loop.
                  ;;
               *) # always allow for the unexpected
                  print "\nUnknown mango operation [${REPLY}]"
                  break
                  ;;
             esac
           done
         sleep 2
         done
         break
         ;;
      2) # tango
         ;&  # Fall through to #3
      3) #rango
         print "\nYou picked $option"
         break
         ;;
      4) # exit
         break 2  #  Break out 2 levels, out of the select and the main loop.
         ;;
      *) # Always code for the unexpected.
         print "\nUnknown option [${REPLY}]"
         break
         ;;
    esac
  done
sleep 2
done

exit 0