Abstract: This article systematically introduces how to clean up Ubuntu systems, including deleting residual configuration files, clearing downloaded cache packages, clearing unnecessary packages, and clearing useless language files, this section
Cause analysisAfter the registry is cleared, you may not be able to access the Internet because the winsock2 and winsock in the registry are accidentally deleted, resulting in the absence of corresponding processing interfaces. Therefore, we only
1. Generate and regenerate
During "Generation", files that have not been changed will not be regenerated only after they have been changed;"Regenerate" means that all files are regenerated.Take CPP as an example when you only modify some. files
SQL 2008 log Files account for 23G of hard disk space, and the transaction log has been truncated (Truncate), the actual log content is small, 1G is not, want to release the extra space occupied by the log files.
However, no matter how you shrink
There will inevitably be extra empty lines in the process of editing a document. Is there a better way to clear all or part of a blank line in a longer document? Of course there are, and more than one kind of empty lines are unavoidable in the
What is computer garbage?
Is the computer's use of the process generated by the unwanted files. such as sliding the mouse, watching computer video, click on the keyboard, open files, browsing the web, are generated computer garbage.
How often does
Linux does not produce unwanted junk files, but Linux does not automatically delete these files in the upgrade cache, or it takes up a hard drive.
One, delete cache
1, a very useful cleanup command:sudo apt-get AutoClean cleans up older versions of
Android--android Lint Tool Project resource cleanup
Recently maintained projects for more than two years, through the iterations of many predecessors, the project has not become robust, and become very bloated. The Android Lint tool cleans it up
#缺失值
An=c (1,2,na)
is.na (AN) #会形成一个布尔向量
A Boolean vector is a vector such as a herd (false,false,ture).
There is also a function for missing values: complete.cases function
The difference between this function and Is.na is:
Now have a lot of configuration is not very high computer users formally used the WINDOWS7 (hereinafter referred to as Win 7), how to let the low configuration of the computer can be more fluent run win 7? Although some software provides a fool of
Today small make up to introduce the Win7 system how to clear cache to prevent ARP virus attack, the so-called ARP attack is to spoof IP address and MAC address to achieve ARP spoofing, can generate a lot of ARP traffic in the network to make the
For program developers, it's also easy to create quick Jump Lists for your application to make it easy for your users. Also, you notice that the JumpList feature on the Windows 7 taskbar not only provides the above mentioned, but also includes a
In fact, the method is very simple, as long as the mobile phone Tencent video into the cache can be cleared, this I believe that friends do not let me say it, specific to see the article.
1. We open the mobile phone Tencent video and then click
1, first on the desktop press the "Win key +x" key combination, and then select the "Run" option, as shown in the following figure:
2, after entering the Control Panel, click on "System and Security", as shown in the following figure:
The computer cleans up the dust to need to notice the matter:
1, many friends like to use brushes to clean up the dust, in fact, this method is not the best, because the hair on the brush will be exposed to hardware, easy to cause damage to the
When you clean up the C disk, right-click to select "Automatically fix file Error", which prompts "disk check cannot be performed because the disk check utility requires some Windows files on the exclusive disk that can only be accessed after the
With Windows systems, you often use the steps to copy, cut, and paste. Sometimes accidentally pasting the contents of the Clipboard into an unknown place, resulting in larger storage space. In order to avoid this problem, the system's small
In the system will inevitably exist duplicate files, these duplicate files will occupy our large amount of system space, thus affecting the speed of our operation. Therefore, we need to clean up these duplicate files, so let's take a look at the
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