Initial knowledge of Linux and installation of CentOS 7

1.1 Beginning of study

Many people will think, their own bad, is not the social "curse" it?

Of course, it is not an absolute mistake to think like this. In fact, I was at the beginning of the same feeling, I found that the various kinds of life, such as: The interview is not successful! Can't find a girlfriend! This upset that upset. In fact, life He Chang is not such a child?

If life is as good as a movie, have you ever thought that the essence of film is an art? And art comes from life, and life is the result of the people who have not been happy to beautify. Then again, to see the film actually we just "see" rather than the real experience, if you live in the film, you never think of life difficult?

Well, no more nonsense, when we know the hardships of life, don't you ever go? No, I want to overcome the difficulties and dare to challenge the difficult, let oneself grow. When our parents, neighbors and schools do not give too much help, I can only rely on their own, seize the opportunity, so? We have to learn.

When you see this place, you first give yourself a bit of praise! You are also a person who want to change their own, we can not change the fate, but to change their mentality. Of course, this article is for those who want to learn the technology of a sympathetic place, hope to see the people can have their own opportunities for change, if all are doing technology, that progress together, if it is to do other industries, it is a reference to it.

Why should I learn Linux?

I learn Linux at the beginning is to do operations, and do a few years feel that Linux will be eliminated, this is one of the reasons for learning, in fact, the company also does not use the Linux system. It is not available now, not ruled out later. Or Never learn! When it happens, your salary will go up a lot. And Linux is quite powerful, all command line, looks tall on, so very curious to want to learn.

Let us summarize:

1. In order to improve your skills, you will have more opportunities than others when you have higher skills than others.

2. In order to be well-paid, life should be passable, not for the sake of dreams and for the next generation, so make good money.

Warm tips:

When you really decide to learn a skill, use the greatest effort to learn, and continue to adhere to the end! Our future is a continuous learning society, I wish you success in school, to find a good job.

1.2 Understanding Linux

What is 1.2.1 Linux?

   linu is actually an operating system. I usually use the computer installed is the Windows system. Of course, there are other versions of the system, such as Apple's Mac OS (notebook) and android phones are actually developed on Linux systems. Perhaps you have heard that the Unix,linux system is dependent on UNIX systems developed, so UNIX is older than Linux systems, and in the server domain.

1.2.2 Linux Origins

How was Linux born? Of course, if the long-winded, even I may not be able to see, let alone the people? So, a short talk about the origin, if you are interested can go to Baidu a bit.

In the 60 's, computers only a few people can use, then the computer is also very large and bulky price noble, so the computer system at that time is batch processing, that is, a batch of tasks submitted to the computer, and then wait for the results. Inefficient, due to the inability to interact, can only wait to finish processing to continue other tasks, resulting in a huge waste.

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         The computer that was used (PDP-7 computer)

    Because of Unix's starting charge, the computer's Daniel Richard Stallman The free software movement, which blew up the Communist horn (launched the gun Movement), and issued the Communist Manifesto (the GPL), and the movement was recognized by many people.

the birth of Linux in the 1991 by Linus Torvalds University in the era of the development of the operating system.

The tree map of Linux distribution shows that we are familiar with Linux kernel version of the operating system has CentOS, Ubuntu and other systems.

Other references:

1.The origins of Linux: from a story

2.Linux origin and development

Summarize:

the development of Linux system is an inevitable factor, of course, it is inseparable from the tireless efforts of Daniel and many fans, only to develop such a good free system.

1.3 Installing a virtual machine

1.3.1 Preface

When learning Linux systems, it is generally difficult to access the server, so install virtual machines, common virtual machine software VirtualBox (open source free) and VMware Workstation (paid version), and I installed the virtual machine is a VMware Workstation 12 to do the demo.

Download the installation package Please Baidu, suggest that you use genuine software or free open source software.

1.3.2 Installation Steps

After downloading the installation package, double-click Run, the installation process is as follows:

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Choose to modify the installation directory because my computer is a mechanical hard drive so install to D drive. If your computer solid state can also be installed to the C drive, of course, you want to install in other directories is also possible. (shown)

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It is important to note that the key is entered, because the software is closed source (closed source meaning: code compiled encrypted) developed, so you need to enter the key to activate. Otherwise, there are many features that are limited.

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When you have completed the above steps and clicked finish, the description of the software installation was successful.

1.3.3 Operation Tips

generally installed Windows system software will need to click Next, Next, complete, according to the prompt installation, there are few options to change.

Summarize:

Virtual machine installation is not too many steps, is basically a fool-like installation, do not have a lot of software to understand, you can install the software, as long as pay attention to some special options, do not choose the wrong on the line.

1.4 Installing CentOS 7

Before installing CentOS 7, please download the image of ISO on your own website or other site and do not explain it here.

1.4.1 Start Installation

After we download the image to the local computer, I can first open the virtual machine, move the mouse to the File menu in the upper right corner, click Select New Virtual machine as shown in

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New virtual machine can choose = = "Classic = =" Custom installation, it is recommended that you can use the classic installation, My side demonstrates the use of custom installation.

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Select the last item and click Next, as shown in

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Select Second, version select CentOS 64 bit after clicking Next, as shown in

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Set the name and installation location of the virtual machine, and recommend a different disk, as shown in

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Specify the disk capacity selection first, as shown in

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Click Next, Finish will return to the main page, select Edit virtual machine settings, select CD/DVD again using ISO image file, click Browse to find the ISO file before downloading, as shown in

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When clicked OK, turn on this virtual machine, wait for the following screen to display, pull down can choose Chinese, also can search, recommend in English

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Software selection of minimum installation can save system resources, for the resources of the more intense users, if it is local tyrants please ignore. Why Add development tools? Since some development features need to be used later, it is not necessary to install again.

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When we choose to manually partition, in CentOS 7 The default minimum/boot is 200M, choose 200M, if you are the smallest system installed. Swap partition: If the memory is less than or equal to 4G, the recommended setting memory is twice times, the maximum can not exceed 8G. Local tyrants can not be set

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In the process of waiting for installation note, you will set the root password and create a user, directly created on the line. Then wait for a few minutes, my side wait for 7-8 minutes or so!

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If you go to the above interface, then congratulations on successfully installing the CentOS 7 system.

Summarize:

When installing CentOS 7, if you choose the Classic installation to install all the components, the installation is successful after the desktop form like Ubuntu. If you think of me. To install a minimized system, you can choose the second way. Of course, if you encounter difficulties in the installation can take a snapshot, first copy, in the installation, try several times, or will not be able to carry out Baidu, can find the answer!

This article is from the "Travels of Taoyuan" blog, please make sure to keep this source http://3622288.blog.51cto.com/9153892/1973078

Initial knowledge of Linux and installation of CentOS 7