commands

while :
do
clear
echo "_________________________________________________________________________________________"
echo "|_______________________________________________________________________________________|"
echo "||_____________________________________________________________________________________||"
echo "|||                                                                                   |||"
echo "|||                                  GENERAL COMMANDS                                 |||"
echo "|||                                                                                   |||"
echo "|||      1. DISPLAY SYSTEM TIME                                                       |||"
echo "|||                                                                                   |||"
echo "|||      2. PATH OF THE CURRENT DIRECTORY                                             |||"
echo "|||                                                                                   |||"
echo "|||      3. CHANGE PASSWORD                                                           |||"
echo "|||                                                                                   |||"
echo "|||      9. RETURN                                                                    |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                                   |||"
echo "|||                                                                        0000___000 |||"
echo "|||      Please select desired option index                                00000__000 |||"
echo "|||                                                                        000_000000 |||"
echo "|||                                                                        000__00000 |||"
echo "|||                                                                        000___0000 |||"
echo "|||___________________________________________________________________________________|||"
echo "||_____________________________________________________________________________________||"
echo "|_______________________________________________________________________________________|"
read option
case $option in
1) echo "The current time of the system is "; date;
   echo "Press ENTER to continue"; read nothing;;
2) echo "The current path is "; pwd;
   echo "Press ENTER to continue"; read nothing;;
3) passwd;
   echo "Press ENTER to continue"; read nothing;;
9) sh menu; break;;
*) echo "Typing error"; sleep 1;;
esac
done