Shell Programming and Scripting

cat $name[tab]$telephonenumber >> telephonebook.txt

echo "If you want to stop adding datas to your telephonebook please type 'break'
if [ $name = break ] #this part is probably not good
then
      echo "the program is shutting down..."
      #missing commands
else
      cat $name[tab]$telephonenumber >> telephonebook.txt
fi

break

exit [errno]

sleep 5

while true
do
    echo "To finish press return"
    echo "Enter name" ; read name
    if [ "${name}""X" = "X" ]
    then
          echo "the program is shutting down..."
          break          # Exit the while loop
    fi
    echo "Enter telephone number" ; read telephonenumber
    echo "${name} ${telephonenumber}" >> telephonebook.txt
done