linux basic tutorial

Basic python tutorials-Introduction to user-defined functions, basic python tutorial Functions The most important purpose of a function is to make it easier for us to reuse the same program. Some operations are affiliated to a function. When you want to implement the same operation in the future, you only need to call the function name, without repeating all the

Course connection: basic structure of the Linux File System File System Structure 1. System Structure A Linux File is an inverted single tree structure. The root of the file system is "/". File systems are case sensitive. The path is separated by "/", and ipvs is "\". 2. current working directory Each shell or system process has a current working director

I am very depressed, this book really said very detailed, I am looking at chapter II, after reading to take a deep breath, really too detailed (Lao) fine (DAO).But that's good, and the hard stuff behind it should be good.So, this chapter just as a preview of the chapter, I take out some slightly more nutritious content to record it ~Note: This series of tutorials is not suitable for friends without any programming language basis, but as a supplement to the C + + Foundation.The

First understanding of PHP (1) Basic syntax, first understanding of php basic syntax. I first got to know the basic syntax of PHP (I). I first got to know the basic syntax of php and was always ready to learn PHP. as a result, there was always a problem some time ago, which was delayed for a while. Catch up now! This s

still feel that it is not fun, you can try to decompile some of the popular Unity3d game to get the code, after all, the real production environment code is the most worthy of deep research, in this Part I would like to recommend the code of the three countries, quite neat.My Unity3d Blog and Project indexIn the completion of the above learning process, to see some third-party blog is also quite useful means, here shameless to promote my blog and my mini-project. "Unity3d

Android Basics Getting Started tutorial--1.5.1 git using the tutorial's basic operation of the local repositoryTags: Android basics Getting Started TutorialWhat is Git? A distributed version control system, similar to SVN, but one version control system that is far more powerful than SVN①git can be easily versioned locally, just as you have a version Management Server locallyWe can choose to push t

Because the discovery of the basic tutorial I recommended before the site has been very perfect, do not repeat the writing, so Ben Wang Lai to do exercises together.First, the principle of encryptionI remember when I learned C + + when I learned the input and output stream, when Mr. Wang taught us to write a small encryption program, so this time since the study of Python This small exercise of course not l

First Knowledge of PHP (i) basic grammar, the first knowledge of PHP basic grammar Always ready to learn PHP, the results of a period of time there is always something, delayed for a while. Hurry up and catch up now! This series just talk about my comments on PHP, not the nature of the tutorial. In addition, I am a small white, just write essays, the Great God f

HTML basic structure, and common tagsThe above is the basic structure of HTML.1. Below is a list of the basic HTML tags(1) HTML titleThe HTML title (Heading) is defined by tags such as The following is the tag code and display:(2) HTML ParagraphThe HTML paragraph is defined by the (3) HTML linksHTML links are defined by the (4) HTML imageHTML images are defined b

Basic tutorial for Android -- 2.4.13 basic usage of ViewFlipper This section introduces: This section introduces ViewFlipper, a multi-page management control that comes with Android and can be automatically played!Unlike ViewPager, ViewPager is a one-page object, while ViewFlipper is a layer-by-layer object. Unlike ViewPager,Used to enter the boot page after th

Public platform development tutorial (ii) basic principles and message interface summary, basic principles of the public I. Basic Principles Before you start, you may be very interested in this, but you are quite confused. Is it complicated? Difficult to learn? In fact, it is quite simple. To eliminate your concerns, I

(WMS or WMTS), Vector data (geojson format, KML format ... such asvar osmsource = new Ol.source.OSM ();4. LayerA layer is a visual display of data in a resource, and Openlayers 3 contains three basic layer types ol.layer.Tile : ol.layer.Image , and ol.layer.Vector .The ol.layer.Tile is used to display tile resources, which provide pre-rendering and consist of tile picture meshes organized by a specific zoom level of the individual rate.The ol.laye

Vroisis ISIS basic configuration tutorial, vroisis isis basic configuration Lab content:There are four routers in the network. The IS-IS configured to connect the network. R1 and R2 are L1 routers, Area10 IS a common area, and Area20 IS a backbone area. Tutorial topology: Experiment Configuration: [R1] isis 1[R1-isis-

This article mainly introduces the basic data types and variable declaration in the basic python tutorial. it first introduces some knowledge about variable declaration and then lists the most common basic data types, for more information, see Variable does not need to be declared Python variables do not need to be de

This article mainly introduces the basic tutorial for using JavaScript functions. it is the basic knowledge of getting started with JavaScript. if you need it, you can refer to the function as a set of reusable code, it can be called anywhere in the program. This eliminates the need to write the same code again and again. This will help programmers write modular

same linePython can use multiple statements in the same row, with semicolons (;) split between statements, and here's a simple example:Import ' Runoob ' ' \tabc\n ')Print outputThe print default output is newline, and if you want to implement no wrap, you need to add a comma to the end of the variable:Multiple statements form a code groupIndenting the same set of statements constitutes a block of code, which we call the code group.Compound statements such as if, while, Def, and class, the first

Iptables practical tutorial (1): Basic Concepts and Principles, iptables practical tutorialOverview Iptables is a built-in firewall software for linux. It is used to configure IPv4 packet filtering or NAT (ip6tables for IPv6 ). In linux, the firewall is actually part of the system kernel. Based on the Netfilter archite

Oracle442 application scenarios --------- basic PL/SQL, basic plsql tutorial Bytes -----------------------------------------------------------------------------------The Application Scenario 207---231 is skipped after the backup and restoration of the database .....The database network configuration is omitted, which is not very common in actual applications. The

MATH.SQRT (4), the square root is computed, and the result is 2.0SQRT (-4) error, cannot process imaginary numbers (end with j), requires import Cmath, uses Cmath.sqrt (-4) The program automatically ends, you can add Raw_input ("Press") at the end of the code Concatenation of strings, "hello." + "World"string printing, str ("Hello,world") #转换为用户看到的字符串 Hello,worldRepr ("Hello,world") #以合法的python表达式形式表示 ' Hello,world 'This conversion is useful when printing includes a number variable.

This article mainly introduces the definition of the basic Javascript tutorial and relevant information about calling functions. For more information, see the function as a statement that can be run at any time. to put it simply, A function is a set of statements used to complete a function. it accepts 0 or multiple parameters. Basic Function SyntaxAs follows: