Rsync Service Deployment and Detailed Parameters

Rsync introduction Rsync is an open source, fast, multi-functional, full and incremental local or remote data synchronous backup tool. Rsync software is suitable for unix/linux/windows and other operating system platforms. Traditional scp and cp tool copies are complete every time, while Rsync has incremental copy function besides complete co ...

Posted on Wed, 25 Sep 2019 22:43:13 -0700 by shmoo525

Internal and external command assistance

View internal and external command help I. Internal Order _Use type to determine whether the command is internal or external, and type is followed by the command to be viewed. Example: type enable [10:52:18 root@centos ~]#type enable enable is a shell builtin Some commands have both internal and external commands, but the system will give pri ...

Posted on Mon, 23 Sep 2019 23:48:14 -0700 by prasad_deba

Principle of Mangrove and Black Tree

Red Black Tree is a self-balanced binary search tree, which is a data structure used in computer science. Its typical use is to implement associative arrays. Nature Nodes are red or black. The root node is black. Each leaf node (NIL) is black. (Note: Leaf nodes here refer to empty (NIL or NULL) leaf nodes! ) The two children of each red node a ...

Posted on Mon, 23 Sep 2019 20:14:39 -0700 by demouser

How to stitch GET request parameters

In the process of interface testing, I wrote a string replacement method to handle parameter splicing of get interface, and then optimized this method, which is compatible with Chinese character prompting for illegal characters, using the urlencode method that comes with java.Include the first method, which was previously passed by json.Share t ...

Posted on Mon, 23 Sep 2019 19:53:39 -0700 by MrAlaska

Qt Writing Custom Control 58-Histogram Symmetry

1. Preface This control is also not an original control. It comes from the code on the reference network. Symmetrical as its name implies, it divides the canvas into upper and lower parts, automatically draws the set value according to half the canvas height as the reference height, and then increases the dynamic transition effect, which is sim ...

Posted on Sun, 22 Sep 2019 17:49:46 -0700 by sundru

Qt Write Custom Control 56-Wave Curve

1. Preface Wave curve control, in fact, is a core of the previous water wave progress bar control. In fact, it uses sinusoidal curve to generate corresponding coordinates for drawing, and extracts this function independently, in order to study various sinusoidal cosine and other expansion effects in m ...

Posted on Fri, 20 Sep 2019 19:21:33 -0700 by Crysma

Qt Writing Custom Control 55-Mobile Address Book

I. Preface In the previous several articles, the difficulty coefficient of the control is nearly 0, and there is even a suspicion of the number of controls. This time, we must have a strong control. The difficulty coefficient of this control ranks the top five among all the controls, and the amount of code is not small. The header files are 550 ...

Posted on Fri, 20 Sep 2019 08:02:14 -0700 by robert_gsfame

Accessing Kubernetes CRD with client-go package

Accessing Kubernetes CRD with client-go packageThe Kubernetes API server can be easily extended by customizing resource definitions. However, accessing these resources with the client-go library is a bit cumbersome, and there is no complete official documentation. For example, the Kube builder operator-framework can easily help us create and im ...

Posted on Thu, 19 Sep 2019 05:23:45 -0700 by igoy

[Linux] Chapter 8 - Multithreading

Chapter 8 Multithreading Thread concept _Multiprocess task processing is the simultaneous processing of tasks through multiple processes. Multiple PCBs have multiple virtual address spaces and execute different codes separately, which are not related to each other. Multithreading, on the other hand, ...

Posted on Thu, 19 Sep 2019 03:16:11 -0700 by compguru910

Quickly learn how to write CMakeLists.txt files

    This paper summarizes the writing method of CMakeLists.txt file on linux platform. First General Module   1.1 cmake version requirements cmake_minimum_required( VERSION 2.8 ) # Project file name loop_closure, optional project( loop_closure ) 1.2 Compilation mode IF(NOT CMAKE_BUILD_T ...

Posted on Thu, 19 Sep 2019 00:24:33 -0700 by killerofet