I have drupal for one of my website. I get emails to update the drupal version everyday but I am really dizzy to do this. Is there any method to update the drupal software with one click from admin panel like wordpress and joomla? It is really annoying downloading files of drupal and then replacing it.
You mean updates to core and modules? I have messages about updates on a regular basis. Do you have cron job running? Home » Administration » Configuration » System
Yes I am talking about core and modules. The cron job is setup for receiving messages about update.
ok but there are several places you can click on the admin bar and it will do the updates So far I have never had to do a manual update/upgrade, I just click update when there is the status message.
You can also go in reports it will tell you all the details: admin/reports/updates
Error message
Automatic updating of Drupal core is not supported. See the upgrade guide for information on how to update Drupal core manually.
are you using drupal 7.26 ?
The first question is what version are you using. The second is, when was the last time it was updated?
The easiest way to update a Drupal site core + contrib modules is via an ssh terminal window using the drush tool. If you’re just updating modules, you can also do that through the admin screens.
I am using Drupal 7 and would like to update to 7.26
Ah! I just read that drupal doesn’t allow to update the core via the admin interface, you have to do it manually! 
I found this article that shows a drush command in order to update: http://iambusychangingtheworld.blogspot.ca/2014/01/drupal-using-drush-to-update-drupal-core.html
This is new to me as well because I only started from the latest build
No Drupal won’t update core from the UI. It may at some point but not presently. The easiest way to automate your updates is by using the Drush tool and a terminal or shell window.
Your server needs to have drush installed and available to your account. Most hosts these days have drush available but check with your host.
You ssh into your server to the root of your site (usually httpdocs or www or the equivalent). Then run: “drush status” to check things out. If everything looks good, run: “drush up”. You receive a list of things that drush will be doing and you can OK it or say no and nothing will change.
If you want to do it manually, via FTP, just copy then new copy of Drupal and overwrite the old one but DO NOT CHANGE THE /sites DIRECTORY. The /sites directory is where all of your custom stuff lives and you do not want to mess with that during updates.
Also, if you update manually, make sure you are logged in as the admin and once the update has been uploaded run the upgrade script on you site: www.example.com/update.php (where example.com is your domain name).
Thank you. My question was to update core with one click from Administration panel like other CMS but unfortunately it is not possible. I updated my Drupal to 7.26 yesterday using FTP method. I uploaded zip folder and extracted all files in main folder. The files are replaced. After I run xxx dot com/update.php and it completed the process.