Using and managing old Linux commands like a guru — When you are doing an operation under GUI, even if you know you did it before, you have to do it again in most cases. Repeating yourself is not productive, is it? The good news is, when you are doing an operation under a Linux terminal, you never have to…

MySQL automation in Linux — Executing MySQL queries in Linux is an essential skill for back-end or DevOps developers. Although there are lots of GUI clients to handle databases, it’s a common scenario that a developer prefers to run some queries directly on the Linux terminal. …

Monitor your Linux servers like a guru — When it comes to server-side automation, or called DevOps automation, bash scripts play an essential role. However, the syntax and usages of bash are not as “modern” as Python. It’s a little hard for junior developers to write a useful bash script even if she has some basic knowledge about…

A super weapon for text editing in Unix-like systems — In Unix-like operating systems, there is a text editing utility called sed, which stands for “stream editor”. It’s not beginner-friendly at the first glance and you probably like to use interactive text editing tools in most cases. However, for these scenarios: You are writing automation scripts, which is not possible…

No need to pay anything — It’s a common scenario that you need to build a static website, such as a portfolio website, a simple blog or an official page of your small business. In these cases, it’s not cost-efficient to buy a server on AWS, Azure or other vendors. All you need are an open-source…

Word cloud is a new type of digital art — Word cloud, or called tag cloud, is a fantastic data visualization technique. Basically, it analysis the frequency of each word in a text and display the results in a beautiful way. It is widely used in data analysis, digital marketing, advertisement and other areas. Some artists, such as Juan Osborne…

They move forward differently — Software Engineering is a very special expertise. If you’re in the tech industry long enough, you probably know that one engineer’s income can be insanely higher than others. It’s unbelievable for many other jobs.

CLI is more productive than GUI — If you are a software developer, the longer you use Linux, the more productive you will be. Why is it? 🤔 An obvious reason is that the CLI (command-line interface) is so powerful. For some operations, if you use GUI (graphic user interface), you have to do several mouse clicks…

Precisely control the access permissions of your files — If you need to pick out one command in Linux that is essential but confusing for beginners, which one you will choose? 🤔 For me, it is the chmod command. I started to use Linux many years ago. But something like the following made me confused many times: chmod 664…