add colors and auto answering

update.sh

@@ -1,18 +1,25 @@
-
 #!/bin/bash
 
+# Color variables
+red='\033[05;01;31m'
+green='\033[05;01;32m'
+# reset the color after that
+reset='\033[0m'
+
 exit_status() {
     if [ $? -eq 0 ]
         then
                 echo
                 echo "-----------------------------------------"
-                echo ">>>  Command Execting Was Successful  <<<" 
+                echo -e ">>>${green}         Command Execting Was Successful         ${reset}<<<"
                 echo "-----------------------------------------"
                 echo
+                sleep 2
+                clear
         else
                 echo
                 echo "-------------------------------------------------------"
-                echo ">>>  [Error] Process Command Executing Has Failed!  <<<"
+                echo -e ">>>${red}  [Error] Process Command Executing Has Failed!  ${reset}<<<"
                 echo "-------------------------------------------------------"
                 echo
 
@@ -24,17 +31,14 @@ exit_status() {
     fi 
 }
 
-start() {
+upgrade() {
             echo
-            echo "***>>> Upgrading The Operating System <<<***"
+            echo -e "***>>>${green}Upgrading The Operating System${reset}<<<***"
             echo
-}
-
-upgrade() {
             sudo apt update;
             exit_status
 
-            sudo apt upgrade;
+            "yes" | sudo apt upgrade;
             exit_status
 }
 
@@ -47,14 +51,13 @@ exitUpdate() {
 
             echo
             echo "-------------------------------------------------------"
-            echo ">>>>   Operating System Update Has Been Completed  <<<<"
+            echo -e ">>>>${green}   Operating System Update Has Been Completed  ${reset}<<<<"
             echo "-------------------------------------------------------"
             echo
         exit
 }
 
 #calls the functions
-start
 upgrade
 cleanUp
 exitUpdate