login programme

vi login
clear
echo "Now the Haifeng Linux world is just for you"
echo -e "The last time you login Date and Time:\c"
date
echo "login,please enter the username"
echo -e "username:\c"
read answer
if test "$answer" = suheng
then
  echo "Welecome to enter the Liunx world, suheng!"
  echo -e "Now Date and Time:\c"
  date
  echo -e "Number of users on the system:\c"
  who |wc -l
  echo -e "Your current directory:\c"
  pwd
  echo "have a Good time!"

else
  echo "You don't have the right to login in this server!"
  echo "You can try to use the currenty username to login later."
  echo "System is locked,please wait for 20 second"
  echo "The system is reboot ..."
  sleep 20;clear
  sh login
fi
#Save the file as login ,then run sh login ,you can see the result.
#The programme passed in Ubuntu linux.