Answer to Question #172479 in UNIX/Linux Programming for shailendra

Question

Write a shell script that demonstrates your ability to organize interactive communication

of its potential user with the UNIX environment in a friendly manner.

1. A user starts the program typing the program name and first his/her first name

and then the ID number as two parameters of the program

2. Program shall ask the secret key to run the program; a user should program this

secret key in advance. If the user enters correct secret key it should move to next

step (3), else it should prompt to enter correct key for four times and then exit the

program.

3. The program welcomes the user somehow mentioning his/her ID number first,

then his/her name and then displays the date and the time of the execution

4. The program displays five codes and names of the five countries team that has

played Football (one code and name per line) and asks the user to guess which

the one is best football team. The codes for Brazil, Argentina, Nepal, China and

England are BRZ, ARG, NEP, CHI and ENG respectively.

Answer 1

1. A user starts the program typing the program name and first his/her first name

  and then the ID number as two parameters of the program.

Script :

echo ""

echo "         *************************************************************"

echo "     -------------------------------------------------------------------------------------------”

echo “     |   WELCOME TO THE BEST FOOTBALL TEAM AND PLAYER  |

          |           SELECTION PROGRAM                       |

echo “     -------------------------------------------------------------------------------------------“

echo “       ***********************************************************************   “

#Reading the name of the program.

read -p "Enter the name of your program = " programName

while [[ -z $programName ]]

do

    echo "  ______________________________________________   "

    echo “  |                                               |  "

    echo "  |    Sorry! program cannot be empty                  |  "

    echo " |_______________________________________________| "

    read -p "enter the name of a program = " programName

done

echo -e "\n"

#Reading first name.

read -p "Enter your first name = " fName

while [[ -z $fName ]]

do

    echo "     _________________________________________  "

    echo "     |                                           | "

    echo "     |          Sorry! user cannot be empty.          | "

    echo "     |__________________________________________ | "

    echo ""

    read -p "Enter your first name = " fName

done

echo -e "\n"

#Reading the ID number

read -p "Enter your ID number = " id

while [[ -z $id ]]

do 

   done

echo "    _________________________________________  "

echo "    |                                          |  "

echo "   |         Sorry! ID cannot be empty.            |  "

echo "    |__________________________________________|  "

echo ""

read -p "Enter your ID number. " id

2. Program shall ask the secret key to run the program; a user should program this

   secret key in advance. If the user enters correct secret key it should move to next

   step (3), else it should prompt to enter correct key for four times and then exit the

program.

3. The program welcomes the user somehow mentioning his/her ID number first,

then his/her name and then displays the date and the time of the execution.

      Script:

function startProgram(){

a=5 #Defining variable a and its value as 5

while [ $a -gt 0 ]

do

echo -e "\n"

read -sp "Enter the secret key of a program.(Secret key is hidden) = "   

secretKey #Reading the secret key.

if [[ ( $secretKey == "sharon") ]]; # If the secret key is "sharon" than user is

login successfully.

then

     echo " "

 echo "  __________________________________________  "

 echo "  |                                           | "

 echo "  |                Sucessfully login             | "

 echo "  |                                          | "

 echo "  |__________________________________________| "

 echo " "

 echo -e "\n"

 echo "   Congratulations. Your attempt to login this program is

successful."

 echo "  ID Number = $ID"

 echo "  First Name = $fName"

      #   Displays the execution    date.

 echo "  Execution Date = "$(date '+%d/%m/%d')     

     #Displays the execution time.

 echo "  Execution Time = "$(date '+%H:%M:%S') 

break

 else

 ((a--))  #Decreasing the value of 'a' by 1.

 if [ $a -gt 0 ] #if secret key is invalid , a user gets four more chances

 then

 echo ""

 echo  “ ____________________________________"

 echo "  |                                    |  "

 echo "  |      Invalid key!                     |  "

 echo "  |      Please try it again               |  "    

         # Displaying the chances left to run program

 echo "  |      You have only $a chances left     |"

 echo "  |___________________________________|"

 echo ""

 fi

 fi

 done

 if [ $a -eq 0 ] #If the value of a is 0 then the user cannot login to the

program.

 then

 echo " "

 echo “  _____________________________________"

 echo "  |                                     | "

 echo "  |                  Sorry!               | "

 echo "  |               Login time is out         |  "

 echo "  |_____________________________________|  "

 exit 0

fi

4. The program displays five codes and names of the five countries team that hasplayed Football (one code and name per line) and asks the user to guess which

the one is best football team. The codes for Brazil, Argentina, Nepal, China and

England are BRZ, ARG, NEP, CHI and ENG respectively.

5. After the user typed the country code, if the option is correct, the program informs

about it and gives one two sentences explaining about some of the descriptions/

characteristics of the chosen team, otherwise the program warns about a

mistake, and the user will guess until the correct option is chosen.

Script:

function selectTeam() {

 echo " ____________________________________________  "

 echo " |                                            |  "

 echo " |      Guess the best team and enter code below.    |  "

 echo " |___________________________________________  |  "

 echo -e "\n"

 echo "     -------------------------------------------------------"

 echo "    |  Country Name  |   Country Code   |"

 echo "     --------------------------------------------------------"

 echo "     |     Brazil     |    BRZ         |"

 echo “     |     Argentina  |    ARG         |"

 echo "     |     Nepal     |    NEP         |"

 echo "     |     China      |    CHI         |"

 echo "     |     England    |    ENG        |"

 echo "     ---------------------------------------------------- “

 echo -e "\n"

 while :

 do

 echo "   ------------------------------------------------------"

 read -p "       Enter the best team code here= " teamCode     

 echo "    ------------------------------------------------------"

 case "$teamCode" in

   "BRZ" )

     echo "    -------------------------------------------------"

     echo "    |        Correct team code       |"

     echo "     -------------------------------------------------"

     echo “  _________________________________________"

     echo "  |                                         |"

          echo "  |  The Brazil national footaball team represents Brazilian   "

     echo " |  men's international football an is  admistrated by the  |" 

echo " |  Brazilian Football Confederation(CBF). They have been a  

|"

echo " | member of FIFA since 1923 and a member of CONMEBOL  

since |"

     echo "|  1916 since 1916. Brazil is the most successful national  |"

    echo " |  team in the FIFA World Cup being crowned winner five

times |"

     echo "|  : 1992, 1970, 1994 and 2002.                |"

     echo “  ____________________________________________|"

     sleep 0.4

     

     selectBestPlayer

     break

     ;;

     "ARG"|"NEP"|"CHI"|"ENG")

     # Displaying message to the user incase of incorrect code

     echo "    ----------------------------------"

     echo "   |     Invalid code      |"

     echo "   |     Please try again    |"

     echo "    ----------------------------------"

     ;;

     *)

     echo "   --------------------------------------- "

     echo "  |    Please enter valid code | "

     echo "   -------------------------------------- "

     echo " "

     ;;

     esac

 done

 }