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  Unix directory hierarchy history

As a beginner user of Unix or Linux, people would frequently get confused about the use of different directories of the system.  For example, there is a /bin directory under root(/), it is used to store binary files. However, there are /usr/bin and /usr/local/bin under /usr which are used for storing binary files as well. Some systems even have /opt/bin. What are the differences among them? Though there are articles explaining different directories in *nix such as Filesystem Hierarchy Stan...

   UNIX,LINUX,FILESSYTEM,DIRECTORY HIERARCHY,HISTORY     2016-10-21 23:47:17

  Handle NXDomain error when resolving IP address in Ruby DNS resolver

In another post, we covered how to resolve SystemStackError when resolving IP address in Ruby. In this post, we would cover another common issue where a NXDomain error is returned when resolving an IP address. The NXDomain error means that the queried domain name does not exist in the DNS. In Ruby, DNS resolver library will use /etc/resolv.conf by default get the name servers to resolve the domain name. There are multiple DNS name servers can be specified in /etc/resolv.conf with below format. ...

   RUBY,RUBY ON RAILS,NETWORK,DNS,NXDOMAIN     2017-07-16 01:39:23

  strange thing in PHP session variable and local variable

A few minutes ago, I noticed one strange thing when I did my PHP web application development.The situation is described below:I want to display a user's profile using a query parameter user=user_id as the parameter. And also the session variable when user logs in  is $_SESSION["user"].So before displaying the user's profile, I need to either get the query string parameter user and create a local variable called $user and assign value to it as $user=$_REQUEST["user"].Here comes the strange t...

   PHP,session,variable name,change automat     2011-06-13 12:23:59

  Former Microsoft Executive Vice President Qi Lu joins Baidu

Former Microsoft Executive Vice President Qi Lu joined Baidu(The largest search engine in China) on January 1, 2017. Qi will be group president and COO at Baidu. He will be in charge of Baidu's products, technology, sales and marketing and operations. And he will be the second most powerful person in Baidu just behind Robin Li, the founder and CEO of Baidu. At the same time, Robin Li will step away from daily operation of Baidu. In a statement, Robin Li said “Dr. Lu possesses a ...

   MICROSOFT,CHINA,BAIDU,NEWS,QI LU     2017-01-18 08:53:42

  The Role of Coding Skills in Advancing Tech Careers

In the fast-changing technical landscape of today, coding is not a unique advantage; it's a basic necessity. From a software engineer to a data analyst or digital marketer, being able to code will greatly expand the opportunities one has for their careers and how effective they can be in their jobs. This essay discusses how coding skills help one's career in the tech field and gives the basic concept of coding: objects, a building block for any modern programming language. 1. Creates Employment ...

   CODING,OOP,OBJECT     2024-05-04 14:27:42

   7 Incorrigible Mistakes Of Mobile App Design

Plethora of mobile apps are launched every day, let alone a month or a year. With such a rising competition making an app which is not liked by people is a committal sin not just from a user's perceptive but also due to so many people and their efforts attached to it. In this blog we will discuss some of the very important factors which one should know before crafting an app. It's obviously not worth crying over the split milk as 80% of the users not even open an app again if they encounter ...

   Mobile App     2015-06-18 08:08:48

  Data governance Challenges and solutions in Apache Hadoop

Do you understand meaning of data governance? This is taken as most critical part of an organization that deals with sensitive data of an enterprise. If organization wanted to know who is accessing their sensitive data and what action has been taken by the viewers then data governance is wonderful solution to consider. In this article, we will discuss on data governance solutions and what are the challenges that are faced by organization during implementation of data governance. We will also dis...

   HADOOP DEVELOPMENT,HADOOP INTEGRATION     2015-10-26 08:06:29

  Add compiler argument to build Maven project

Maven is a software project to manage a project's build, reporting and documentation from a central piece of information. It's now widely used t build and deploy projects. It can help automatically maintain the dependencies of projects. There is a central project configuration file named pom.xml. Here you can configure the project you want to build.  In this post, we will show you how to add compiler argument when using javac to compile Java source code. Sometimes we need to pass compi...

   Maven,compiler argument, compiler option, Java 8     2015-04-10 21:59:00

  Maintain multiple versions of Go in one single environment

In a development environment, there might be multiple projects going on at the same time and they may require different development environments with different versions of build tool. In many programming languages, it is possible to have multiple versions of different build tool or development tool on a single environment. For example, there can be multiple JDKs, multiple versions of Ruby using RVM. For GoLang, there is a similar tool called GVM which can also be used to maintain multiple versio...

   GOLANG,GVM,GVM PKGSET,RVM     2019-11-10 00:43:47

  Mastering a New Programming Language: A Professional Guide

Introduction Learning a new programming language can seem daunting, but with the right approach, anyone can become proficient in a new language. Whether you're a beginner or an experienced programmer, mastering a new language can open up new opportunities in your career and enable you to tackle new and exciting programming challenges. In this guide, we'll provide you with a step-by-step process for mastering a new programming language. Step 1: Choose a Language and Set Goals The first step in ma...

   PROGRAMMING,GUIDE,TIPS     2023-04-22 02:52:00

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