echo "**********************"
     echo "Adding a new inhabitant..."
     echo "**********************"
     echo -n "Give me the first name of the inhabitant: "
     read fname
     echo -n "Give me the last name: "
     read lname
     echo -n "Give me the room number: "
     read room
     exists="true"
     while [ $exists == "true" ]; do
     echo -n "Please give me the code of the apartment you want to be added: "
     read code
     gawk '{print $NF}' apartment | 
        if ( grep -q $code ); then 
                                 echo "The code exists"
                          else
                                 echo "Code successfully added"
                                 exists="false"
                                 echo "Now \"exists\" is $exists " 
                                 
        fi
     done
     echo "Inhabitant:  $fname   $lname with room number $room live on $code" >> inhabitant_file
     echo 

Here is the apartment file:

Name of the apartment:  "house1" with code :: 90 
Name of the apartment:  "house2!" with code :: 80 
Name of the apartment: "rush hour" with code :: 100 
Name of the apartment: "fly away" :: 10 
Name of the apartment: "flying high" :: 20 
Name of the apartment: "into the summer sky" with code :: 50 


Here is some strange output:
Give me the first name of the inhabitant: test1
Give me the last name: check
Give me the room number: A50
Please give me the code of the apartment you want to be added: 90
The code exists
Please give me the code of the apartment you want to be added: 80
The code exists
Please give me the code of the apartment you want to be added: 100
The code exists
Please give me the code of the apartment you want to be added: 10
The code exists
Please give me the code of the apartment you want to be added: 20
The code exists
Please give me the code of the apartment you want to be added: 50
The code exists
Please give me the code of the apartment you want to be added: 1
The code exists   
Please give me the code of the apartment you want to be added: 2
The code exists
Please give me the code of the apartment you want to be added: 3
Code successfully added
Now "exists" is false 
Please give me the code of the apartment you want to be added: 

**********
QUSETION 1: Code 1 exists?something wrong from grep? I see that it doesn't..
QUESTION 2:What can be done for the loop to break so the script writes the variables into the file?
***********