Translated

sources/tech/20150916 Enable Automatic System Updates In Ubuntu.md

@@ -1,47 +1,45 @@
-  Vic020
+开启Ubuntu系统自动升级
-
-Enable Automatic System Updates In Ubuntu
 ================================================================================
-Before seeing **how to enable automatic system updates in Ubuntu**, first let’s see why should we do it in the first place.
+在学习如何开启Ubuntu系统自动升级之前，先解释下为什么需要自动升级。
 
-By default Ubuntu checks for updates daily. When there are security updates, it shows immediately but for other updates (i.e. regular software updates) it pop ups once a week. So, if you have been using Ubuntu for a while, this may be a familiar sight for you:
+默认情况下，ubuntu每天一次检查更新。但是一周只会弹出一次软件升级提醒，除非当有安全性升级时，才会立即弹出。所以，如果你已经使用Ubuntu一段时间，你肯定很熟悉这个画面：
 
-![Software Update notification in Ubuntu](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2015/09/Software-Update-Ubntu.png)
+![Ubuntu软件升级提醒](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2015/09/Software-Update-Ubntu.png)
 
-Now if you are a normal desktop user, you don’t really care about what kind of updates are these. And this is not entirely a bad thing. You trust Ubuntu to provide you good updates, right? So, you just select ‘Install Now’ most of the time, don’t you?
+但是做为一个正常桌面用户，根本不会去关心有什么更新细节。而且这个提醒完全就是浪费时间，你肯定信任Ubuntu提供的升级补丁，对不对？所以，大部分情况你肯定会选择“现在安装”，对不对？
 
-And all you do is to click on Install Now, why not enable the automatic system updates? Enabling automatic system updates means all the latest updates will be automatically downloaded and installed without requiring any actions from you. Isn’t it convenient?
+所以，你需要做的就只是点一下升级按钮。现在，明白为什么需要自动系统升级了吧？开启自动系统升级意味着所有最新的更新都会自动下载并安装，并且没有请求确认。是不是很方便？
 
-### Enable automatic updates in Ubuntu ###
+### 开启Ubuntu自动升级 ###
 
-I am using Ubuntu 15.04 in this tutorial but the steps are the same for Ubuntu 14.04 as well.
+演示使用Ubuntu15.04，Ubuntu 14.04步骤类似。
 
-Go to Unity Dash and look for Software & Updates:
+打开Unity Dash ，找到软件&更新：
 
-![Ubuntu Software Update Settings](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2014/08/Software_Update_Ubuntu.jpeg)
+![Ubuntu 软件升级设置](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2014/08/Software_Update_Ubuntu.jpeg)
 
-This will open the Software sources settings for you. Click on Updates tab here:
+打开软件资源设置，切换到升级标签：
 
-![Software Updates settings in Ubuntu](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2015/09/Software-Update-Ubntu-1.png)
+![Ubuntu 软件升级设置](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2015/09/Software-Update-Ubntu-1.png)
 
-In here, you’ll see the default settings which is daily check for updates and immediate notification for security updates.
+可以发现，默认设置就是每日检查并立即提醒安全升级。
 
-![Changing software update frequency](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2015/09/Software-Update-Ubntu-2.png)
+![改变软件更新频率](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2015/09/Software-Update-Ubntu-2.png)
 
-All you need to do is to change the action which reads “When there are” to “Download and install automatically”. This will download all the available updates and install them automatically.
+改变 ‘当有安全升级’和‘当有其他升级’的选项为：下载并自动安装。
 
 ![Automatic updates in Ubuntu](http://itsfoss.itsfoss.netdna-cdn.com/wp-content/uploads/2015/09/Software-Update-Ubntu-3.png)
 
-That’s it. Close it and you have automatic updates enabled in Ubuntu. In fact this tutorial is pretty similar to [changing update notification frequency in Ubuntu][1].
+关闭对话框完成设定。这样每次Ubuntu检查更新后就会自动升级。事实上，这篇文章十分类似[改变Ubuntu升级提醒频率][1]。
 
-Do you use automatic updates installation or you prefer to install them manually?
+你喜欢自动升级还是手动安装升级呢？欢迎评论。
 
 --------------------------------------------------------------------------------
 
 via: http://itsfoss.com/automatic-system-updates-ubuntu/
 
 作者：[Abhishek][a]
-译者：[译者ID](https://github.com/译者ID)
+译者：[Vic020/VicYu](http://vicyu.net)
 校对：[校对者ID](https://github.com/校对者ID)
 
 本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出