YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
problem
Today, a Linux (CentOS 6.5) virtual machine was installed on VMware. When installing apache http web server, the following problems occurred: Without saying a word, I searched a large circle on the Internet and combined with various solutions of netizens. Here, I summarize.
terms of settlement
1. Ensure that the virtual machine ...
Posted on Thu, 21 Oct 2021 03:55:42 -0400 by dave_55
Import TPCH generated data into Postgres database
1. Data generation
Tool download
git clone git@github.com:electrum/tpch-dbgen.git
Modify the makefile in the degen directory
################
## CHANGE NAME OF ANSI COMPILER HERE
################
CC = gcc
# Current values for DATABASE are: INFORMIX, DB2, TDAT (Teradata)
# SQLSERVER, SYBASE, ORACLE ...
Posted on Thu, 21 Oct 2021 03:54:26 -0400 by fesan
Crawler reverse foundation, understand JavaScript modular programming, webpack
WeChat official account: brother K crawler, QQ exchange group: 808574309, keep sharing crawler advance, JS/ Android reverse technology dry cargo!
brief introduction
When analyzing the JavaScript code of some sites, the simple code and functions are usually one by one, for example:
function a() {console.log("a")}
function b() {console. ...
Posted on Thu, 21 Oct 2021 03:45:07 -0400 by definewebsites
Spring AOP function usage details
preface
AOP is both familiar and unfamiliar. Anyone who has known Spring knows the concept of AOP, that is, aspect oriented programming, which can be used to manage some peripheral businesses unrelated to the main business, such as logging, transaction management, etc; It is strange because it has not been used in work, and the related concept ...
Posted on Thu, 21 Oct 2021 03:27:50 -0400 by McChicken
How to split windows in MFC multi document
This paper records how to segment windows in MFC multi files and realize data transfer between windows
1. Define a partition in ChildFrame and embed a CSplitterWnd member variable.
CSplitterWnd m_splitterWnd;
2. Create two dialog boxes and set the properties of the dialog box: set 'style' to 'lower level'; The use of title blocks is prohibit ...
Posted on Thu, 21 Oct 2021 02:55:58 -0400 by canobi
Chapter 3 - Data Semantics
Binding of data members
Here's a question:
extern float x;
class Point3d
{
public:
Point3d(float, float, float);
float X() const { return X; }
void X(float new_x) const { x = new_x; }
//...
private:
float x, y, z;
};
Which X does Point3d::X() return, the one inside the class or the one on the first line? Now many people must say th ...
Posted on Thu, 21 Oct 2021 02:48:40 -0400 by shergar1983
EMQ X MySQL 8.0 topic publish / subscribe authentication
brief introduction
Publish subscribe ACL refers to the permission control of publish / subscribe operations. EMQ X can configure authenticated data sources (built-in data sources and external databases) in the form of plug-ins. When the client subscribes to a Topic and publishes a message, the plug-in realizes the publishing and subscripti ...
Posted on Thu, 21 Oct 2021 02:44:06 -0400 by BPWheeler
Use of transition in CSS (to achieve transition effect)
First give < body > And < style > Basic code in
<body>
<div class="box1">
<div class="box2"></div>
<div class="box3"></div>
</div>
</body>
<style>
.box1 {
width: 500px;
height: 500px;
background-color: yellowgreen;
}
.box1 div ...
Posted on Thu, 21 Oct 2021 02:27:23 -0400 by sn202
Functional programming lambda expressions in Java
catalogue
Write in front
lambda expressions and anonymous inner classes
Parameterless functional interface
Functional interface with parameters
Scope of this keyword
Syntax of lambda expressions
lambda expressions and closures
epilogue
For more technical exchanges, please search for official account number, "said the member. ...
Posted on Thu, 21 Oct 2021 02:03:26 -0400 by brbsta
MySQL single machine / master-slave building + index optimization and underlying principle
Mysql
Based on the book Mysql in simple terms - Second Edition
1, Basic chapter
1.1 installing Mysql for Linux
First, check whether MySQL and Mariadb are installed in the system
rpm -qa |grep -i mariadb
rpm -qa |grep -i mysql
If installed, uninstall
rpm -e mariadb-libs-5.5.68-1.el7.x86_64
## If you are prompted that there are depend ...
Posted on Thu, 21 Oct 2021 01:43:04 -0400 by 00Sven