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physical Backup of database directory/var/lib/mysql every 3 days back up the data to the system/opt/dbbak directory#!/bin/bashDay= ' date+%y-%m-%d 'Size= ' Du-sh/var/lib/mysql 'Cd/opt/dbbak 2>/dev/null | | Mkdir/opt/dbbakecho "Date: $DAY"

More than onceArticleThe importance of game layering has been mentioned in, and the Division of game display layers and the sequence of these display layers can be well controlled to perfectly control the display and occlusion of each element in the

I am going to learn and study the unity3d Quaternary Quaternion. The Quaternary element is used in computer graphics to indicate the rotation of an object. In unity, x, y, z, and w represent four values. The Quaternary element is the simplest

The following is a detailed description of JSAttribute attribute operations. I think this is quite good. Now I will share it with you and give you a reference. Let's take a look at the meaning of Attribute. This article only introduces some

This article summarizes the basic BOM knowledge in javascript. It has good reference value. Let's take a look at the following section. 1. What is BOM? BOM (Browser Object Document) is the Browser Object model. BOM provides objects that interact

Server normal operation 2 months, the day before yesterday the whole station suddenly appeared 502 bad Gateway, all pages are not open, using the NGINX+PHP-FPM mode.Server situation: This server traffic is relatively large, PV around 300,000 per day,

String () and. the difference between toString () Is that String () and. toString () can be converted to the String type, but String () and. there are still differences between toString () and 1. toString () can convert all data into strings, but

This article mainly introduces (Event) Events in javascript. At the end of this article, we will introduce several cases: Box moving with the mouse; text prompt in the input box; select control imitation; message book; custom right-click menu; the

This article mainly introduces the reference and transfer of JavaScript Object parameters. If you are interested, you can refer to a problem encountered today and how to change the parameters to the external function, such: 《script》 var myname = "

The sort () method is mainly used to sort arrays. By default, this method converts array elements into strings and sorts them according to the ASC code. This is understandable, but if an array element is an Object, it cannot be converted into

Programming traps (gotcha) refer to unexpected document features in computer systems rather than bugs. These Programming traps (gotcha) refer to unexpected document features in computer systems rather than bugs. These traps keep beginners away from

ShowModelessDialog () has many built-in methods to generate a dialog box, such as window. alert (), window. confirm (), window. prompt. However, IE provides more methods to support the dialog box. For example: ShowModalDialog () (IE 4 +

Javascript type conversion. Directory: 1: pseudo object 2: convert to a string 3: Numeric to string 4: convert to a number 5: Convert to Boolean 6: difference between Number () and parseInt () 7: differences between String () and toString () 1:

We have noticed that marquee does not scroll cyclically, so there are many alternative scripts. Next we will introduce them in detail: scroll to the left. scroll to the left. Scroll down the image seamlessly. So there are a lot of alternative

This article mainly introduces information about the "pre-compilation phase" and "execution phase" during JavaScript running, if you need javascript, you can refer to it. javascript is a weak language compared to other languages. In other languages

Yesterday I tried a series of suspicious module interception (http://www.bkjia.com/Article/201406/310932.html) experiments, although the final solution still has some compatibility problems, but the general idea has been clear: Static module: Use

Yesterday, I tried a series of suspicious module interception tests. Although the final scheme still has some compatibility problems, the general idea has been clarified: Static module: Use mutationobserver for scanning. Dynamic module: blocks

Before introducing the differences between the three JS data types, let's take a look at the JS data types. In a language such as Java and C, before using a variable, you must first define the variable and specify its data type, which is an integer,

An array is a linear memory allocated. It uses Integers to calculate the offset and access the elements. Arrays are fast data structures, but unfortunately Javascript does not have the same data structure as this array. The array of Javascript is

Only the HTMLElement in IE has the clearAttributesmergeAttributes method. They are non-standard ones. clearAttributes () This method is used to clear all user-defined attributes. As follows: The Code is as follows: Division Script Var p =