Is Linux too hard? You only need to master these 7 points

Linux learning can’t be in a hurry, you must take your time according to certain methods and suggestions, everyone has a set of methods that suit their own, Linux concepts, versions, commands, functions, software, uses, etc. These are all good entry points , Learning Linux is divided into several levels, and I personally feel that Paoding Jie Niu is almost the same. Learning Linux is to list all its knowledge points and difficulties, and analyze, learn, and master them one by one.

There are many things to pay attention to when learning Linux, I think the first thing to pay attention to is the idea. Linux evolved from Unix, and ultimately many application software services based on it are also based on the concept of Unix. Maybe now you think this is a very simple truth. It is nothing more than dispersing the multiple services in the original UNIX task mechanism, and then having a general business logic to quickly combine them into a new service, but there are still many differences.

1. What is the goal of our learning Linux system?

Linux is regarded as a Unix-like system, if we learn the relevant knowledge of Linux, we can learn the Unix system better. The good thing about this information age is that if you want to learn any technology, as long as you put in the time and effort, you will surely gain something. As an open source system, Linux system plays a very important role in our social life. It serves as a stable technical backing in all aspects of our life and serves us. At the same time, there are more and more application software based on Linux. The Android phone in your hand is one of the important manifestations.

2. We must start learning Linux from the command

We all learn Linux, and in most cases, we take a fancy to the stability and security of Linux as a server, and hope to build common services. However, if you want to build a service, you must learn from the basics of Linux, so the most important foundation is the command of Linux. Linux is a very practical system. Unlike the windows system, you can complete the work you want with a click of the mouse. The essence of Linux lies in the command line and in the terminal. Maybe when we first learn Linux, we think that Linux commands are difficult to remember and troublesome to operate. In fact, after getting familiar with it, you will find that the command operations under Linux are really convenient. So if we want Linux to serve us better, we must take the first step and learn common Linux operation commands.

3. As a novice, you must choose a Linux book before learning

In many forums, as well as QQ groups and WeChat groups, you can see that many newbies have encountered some problems in the process of installing and using Linux. It shows that many of us did not effectively master some basic knowledge of Linux when we first learned Linux, so we encountered many problems, and many of the problems were repeated many times. This requires us to have a good Linux introductory reference book, keep it at hand, and read it at any time to supplement our knowledge. Recently I saw “Linux should be learned like this” on the Internet. From the content of the book, it can be seen that it is a very good book for novices, including the installation of virtual machines and systems, basic knowledge, and common usage. service. If you are a beginner and don’t know which book to choose, you can read it. This book is open to the public and you can download the electronic version to see it. Novices can install a virtual machine of RHEL7, and then start to learn Linux by doing experiments against the book.

Fourth, it is best to use the command line to operate the Linux system

Although the Linux system can also have a desktop environment, in fact, X-WINDOW is just an application component in Linux and cannot represent everything about Linux. The Linux system is used as a server most of the time, and the purpose of our study is to use it. When used as a server, the Linux system does not install a graphical interface. In most cases, we need to enter the relevant commands. Let the server that installs the Linux system work for us, so learning to use commands is also for the convenience of operating the Linux server at work. The essence of Linux lies in the command line, which can complete the required operations under the Linux system. In actual work, the server is also operated through the command line. As long as there is a network, you can enter commands through the client to operate a server thousands of miles away, which seems very good.

5. Learn to use powerful and easy-to-use shell scripts

The shell in Linux is a great tool to use. The shell terminal interpreter is described as a “translator” between people and computers. As a medium for users to communicate with the Linux system, in addition to allowing various variables and parameters, it also provides high-level languages ​​such as loops and branches. It is particularly important to use these functions correctly and to issue commands accurately. By learning the shell well, we can write shell script files, which can automate the work through script files to reduce the repetitive work we do on the Linux system, so that we can reduce time and work efficiently when deploying servers. . Through commands and shells, the waste of server resources can be reduced, the available resources can be maximized to application software, production efficiency can be provided, and resources can be optimally allocated. It is also necessary to master shell script programming at work. This is how you should learn” book is worth reading.

6. Learn to master one or two databases in practice

Such as the two mainstream databases MySQL and Oracle. MySQL can be used by more people, it is relatively simple, and the speed is fast. It is used more in some web application fields. If you want to learn Oracle by yourself, you can go to its official site to see more help, almost all the functions used can be found there.

Seven, it is recommended to learn the basic network knowledge of TCP/IP

Have a solid understanding of the TCP/IP protocol layers, which I think you should have before learning Linux. But I still recommend that you review it. In many cases, network problems occupy a large part of Linux problems. With skilled network knowledge and a comprehensive understanding of the network, often after a problem occurs, you will generally determine the problem. Here is a little trick: I usually print out the commonly used network protocol diagrams and paste them on my desk. When I have nothing to do, I can take a look at it so that I can remember it in my heart. When there is a problem, I can know which network information it is. No way.

With the seven suggestions above, I believe you will no longer be confused in the process of learning Linux. Linux learning is a process that requires long-term perseverance. New technologies are constantly emerging. If you want to become a Linux master, you must always pay attention to the development of Linux and master the latest technology in order to be at the forefront of the industry!