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process of inserting the debug hooks more concise and convenient, as shown in the following code:$Cat–n Exp3.SH 1DEBUG ()2 { 3 if["$DEBUG"="true"]; Then 4[email protected]5 fi 6 } 7A=1 8DEBUGEcho "a= $a" 9 if["$a"-eq1 ] Ten Then Oneb=2 A Else -b=1 - fi theDEBUGEcho "b= $b" -C=3 -DEBUGEcho "c= $c"In the debug function shown above, any commands passed to it will be executed, and the execution can be controlled by the value of the

Getting started with Struts2 (1) -- configuration file, getting started with struts2I. Preface 1. Understand the three frameworks What is a framework? A framework is a standard, a rule, and a rule that organizes technology. What are the three major frameworks (SSH), Struts, hibernate, and spring? Struts is mainly responsible for displaying the layer. spring uses IOC and AOP to process and control the busin

During the MySQL management process, some pcservers may occasionally crash or restart. In this case, I need to start the MySQL service after the host is started. Generally During the MySQL management process, some PC servers may occasionally crash or restart. In this case, I need to start the MySQL service after the host is started. Generally During the MySQL management process, some PC servers may occ

When Tomcat is started, a specific method is executed. When tomcat is started import java.util.Timer;import javax.servlet.ServletContextEvent;import javax.servlet.ServletContextListener;public class TestListener implements ServletContextListener { private Timer timer = null; public void contextInitialized(ServletContextEvent event) { timer = new Timer(true); timer.schedule(new TestTimer(), 0, 864000

Wamp cannot be started, and then it is found that apache is not started and the error is apache403 at the beginning. then check the apache configuration file httpd in the configuration file. conf, nbsp; find nbsp; deny nbsp; from nbsp; al wamp cannot be started, then we found that apache was not started. At first,

Threejs official Website-Getting Started Guide (Getting Started)The beautiful Life of the Sun Vulcan (http://blog.csdn.net/opengl_es)This article follows "Attribution-non-commercial use-consistent" authoring public agreementReprint Please keep this sentence: Sun Vulcan's Beautiful Life-this blog focuses on Agile development and mobile and IoT device research: IOS, Android, HTML5, Arduino, Pcduino , Otherw

This section describes how to automatically start SVN when Linux is started. in the previous section, we will explain how to automatically start the SVN service when Windows is started. through this section, you can make a comparison, let's take a look at the differences between automatic startup of SVN in the two operating systems. I hope this section will help you learn more. Configure svnserve on Redhat

HelloWorld program instance for getting started with JSP, helloworld for getting started with jsp This article describes the HelloWorld program for getting started with JSP. We will share this with you for your reference. The details are as follows: Here is the first JSP-HelloWorld! Every "First Love" is mysterious, revealing the secret of JSP! JSP is also a j2ee

"Internet Information Service-default website" stops working and cannot be started. Go to "Administrative Tools-service" and start the world wide web Hing service. The prompt box is displayed, "The World Wide Web Publishing Service cannot be started on the local computer. Error 127: the specifiedProgram".To solve this problem, you can search the Internet for many solutions and try them one by one.1. Some sa

During MySQL management, the PC Server is offline or restarted. I need to start the MySQL service after the host is started. If hundreds of or more MySQL hosts are maintained, similar problems may occur on multiple hosts. It is very cumbersome to perform manual operations each time. We can start the MySQL service along with the system, which solves the problem of frequent manual MySQL startup. To enable automatic start of mysqld with startup, we need

BootStrap getting started tutorial (3) responsive principle, bootstrap getting started tutorial Related reading: BootStrap getting started tutorial (1) visual layout BootStrap getting started tutorial (2) fixed built-in styles Bootstrap Grid System) The responsive mesh system is automatically divided into up to 12 colu

css| Tutorials | Getting Started | grammar 1. Basic Grammar The definition of CSS is composed of three parts: selectors (selector), attributes (properties), and values (value). The basic format is as follows: selector {Property:value} (Selector {property: value}) A selector can be a variety of forms, typically the HTML tag you want to define a style for, such as body, P, TABLE ..., you can define its properties and values by this method, and the attri

After getting started with web development, some more advanced technologies such as log4netredisNodejsMongoDB should learn how to get started and learn more advanced technologies such as log4net redis Nodejs MongoDB after getting started Reply content: How to get started and learn more advanced technologies such as l

Java learning from getting started to proficient Java learning path (1), tools I. JDK (Java Development Kit) JDK is the core of the entire Java, including the Java Runtime Environment (Java runtime envirnment), a bunch of Java tools and the Basic Java class library (RT. Jar ). No matter what Java application server is actually built into a certain version of JDK. Therefore, mastering JDK is the first step to learn java well. The most popular JDK is th

MySQL getting started tutorial (5): create, modify, and delete tables. mysql getting started tutorial MySQL is a Relational Database Management System. This so-called "Relational" can be understood as "tables". A Relational Database consists of one or more tables. A table is the basic unit for storing data in a database. A table contains several fields or records. Table operations include creating, modifyin

High-Performance PHP framework Symfony2 classic Getting Started Tutorial, symfony2 Getting Started Tutorial. High-Performance PHP framework Symfony2 classic Getting Started Tutorial, symfony2 Getting Started Tutorial Symfony2 is a PHP-based Web development framework with fast development speed and high performance. Thi

Apache2 cannot be started on the local computer, and Apache2 cannot be started on the computer. Recently, due to work needs, I have to learn the basic programming of PHP, so I learned how to set up the working environment of PHP. However, as described in the textbook, after WMAP is installed, it cannot run successfully. Then we found that Apache has never been running. Go to the Apache option in WMAP to sel

How to get started with Python and get started with python Learning any language starts from getting started (about 1 year) and reaches the proficiency level through continuous exercises (3 to 5 years). A few people will eventually be proficient in the language and become the best-ears learners, they are the top layer of the pyramid. Although everything is diffic

Basic Python Syntax: getting started with python [2] and getting started with python In the previous blog, we set up a python development environment in Windows. Getting started with python, we have already set up a python development environment on our own windows computer, in this blog, I started to learn the basic s

[Official tutorial] Asp. Net MVC4 Getting Started Guide (3): Add a view and mvc4 Getting Started Guide 3. Add a view · Original address: http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/adding-a-view · Address: http://www.cnblogs.com/powertoolsteam/archive/2012/11/06/2756711.htmlAsp. Net MVC4 Getting St