fix empty cron

cron-list.sh

@@ -14,7 +14,7 @@ if [ ! -f $CRON_LIST ]; then
 fi
 
 echo "Reading current crontab jobs into a variable..."
-current_crontab=$(crontab -l 2>/dev/null || :)
+current_crontab=$(crontab -l 2>/dev/null || true)
 
 echo "Iterate through the lines of the cron.list file..."
 while IFS= read -r line; do
@@ -28,7 +28,7 @@ while IFS= read -r line; do
     echo "The task already exists: $line"
   else
     echo "Adding a job to crontab..."
-    (crontab -l; echo "$line") | crontab -
+    (crontab -l 2>/dev/null || true; echo "$line") | crontab -
     echo "Task added: $line"
   fi
 done < "$CRON_LIST"