#!/bin/sh 

echo 'Dobro dosli!' 
brk=false 
while ! $brk; do 
  read command 	
  case $command in 
    help*) 
      echo 'Trenutno su podrzane samo naredbe help i quit.' 
      ;; 
    quit*) 
      echo 'Dovidjenja' 
      brk=true 
      ;; 
    # ovdje dodati jos naredbi 
  esac 
done