manage: git clone -> git pull to check for updates

manage

@@ -142,7 +142,7 @@ elif [ "$1" == 'install' ];then
   fi
   
   #analytics
-  "${DIRECTORY}/etc/bitlylink" "$app" install
+  "${DIRECTORY}/etc/bitlylink" "$app" install &
   
   #determine which script to run
   scriptname="$(script_name_cpu "$app")" #will be install, install-32, or install-64
@@ -206,7 +206,7 @@ elif [ "$1" == 'uninstall' ];then
   fi
   
   #analytics
-  "${DIRECTORY}/etc/bitlylink" "$app" uninstall
+  "${DIRECTORY}/etc/bitlylink" "$app" uninstall &
   
   #determine path for log file to be created
   logfile="${DIRECTORY}/logs/uninstall-incomplete-${app}.log"
@@ -333,8 +333,17 @@ elif [ "$1" == 'check-all' ];then
    
   fi #end of checking for hidden flags
   
-  rm -rf "${DIRECTORY}/update" && mkdir "${DIRECTORY}/update" && cd "${DIRECTORY}/update" || error "failed to enter the update directory!"
-  git clone --depth=1 "$(cat "${DIRECTORY}/etc/git_url")" || error "failed to clone repository to the update directory!"
+  #if the updater script exists in update folder, then just git pull to save time
+  if [ -f "${DIRECTORY}/update/pi-apps/updater" ];then
+    cd "${DIRECTORY}/update/pi-apps"
+    git pull 1>&2 || rm -rf "${DIRECTORY}/update"
+  fi
+  #re-check and if updater script does not exist then do a git clone
+  if [ ! -f "${DIRECTORY}/update/pi-apps/updater" ];then
+    rm -rf "${DIRECTORY}/update"
+    mkdir -p "${DIRECTORY}/update" && cd "${DIRECTORY}/update" || error "failed to enter the update directory!"
+    git clone --depth=1 "$(cat "${DIRECTORY}/etc/git_url")" 1>&2|| error "failed to clone repository to the update directory!"
+  fi
   
   if [ $installedonly == 1 ];then
     #installedonly flag enabled. Remove apps that are uninstalled, disabled, or corrupted