Introduction to the advantages of linux

Introduction to the advantages of linux
The Linux system allows us to understand how sharing, openness, and freedom can make our lives better. The Open Source spirit is a kind of feeling that makes every technician engaged in the Linux Industry proud, the prosperity of open-source products has benefited from the strong foundation of the open-source community. Linux really gives me a lot, not only the beauty of technology, but also the beauty of life. Next, I hope to talk more about Linux. Let me reveal the secrets of the Linux system! The Linux operating system was first released in October 1991 by Linus Torvalds, a student at the University of Helsinki in Finland. He is the father of Linux, Linus Torvalds! I have read a lot of Linux books. In the thank-you part, I have to thank linus Torvalds first. After all, I have to thank my father-in-law for marrying my daughter, isn't it? Because of its high quality and open source code, the first version of Linux0.02 quickly caused a large number of hackers to "Watch out". Although there are hundreds of Linux releases, however, Linus Torvalds is still used to develop/maintain the system kernel in a unified manner. Although the times have changed, it leaves a truly precious thing-the Linux kernel. Let's take a look at the advantages of Linux. I believe that you will have a deep feeling in your learning or use process, and all SIGHS: "Linux is so easy to use ", you can download and learn about Linux at http://www.linuxprobe.com/. linuxhas a better advantage than windows. L stable and efficient l free or a little cost l less vulnerabilities and fast patching l multi-tasking, multi-user l more secure user and File Permission policies l embedded systems suitable for small kernel programs l relatively less consumption see the resource, these are the excellent features of Linux. They can be said to be "beautiful and lively" beautiful girls, and "cool and cool" Beautiful ladies! If you know the advantages, let's take a look at what should be paid attention to by Linux beginners. The following content only hopes to help Linux beginners a little bit. These are all things that Linux beginners need to pay attention to. Our learning process is often a tough task, therefore, it is a very happy thing to find people or things that share the same path with you in the course of learning. So I recommend you go to "Linux should study like this, not only is it because of the content of this book, but also the communication environment provided by this book. Many Linux enthusiasts learn and grow here, and find like-minded friends here. When you press the command, use the tab key to complete the script, and try to copy the script. After Linux is used for a period of time, I believe that you will become more and more familiar with various commands. At this time, it is easy for people to trust themselves, it is easy to cause errors. If we subconsciously use the tab key when making a quick knock, we can easily avoid errors. In shell scripts, we should try to copy commands from the test command line, so as to avoid the risk of errors caused by lengthy commands. If you use a normal user to complete the operation, try to use the super account "rootroot" as little as possible and have the same rights as the emperor. The more rights you have, the more dangerous and important you need to pay attention to. This requires not only good Linux skills, but also some experience. Therefore, for beginners, try to use less root users. When some of our operations require the root permission, we can modify the sudoers file so that ordinary users can perform the operations with the root permission, so that we can complete the operations, it can also ensure the security of operations, simply an upper-case PERFECT! When modifying the configuration file, remember that backing up the Linux configuration file often corresponds to the service or system configuration, so we must ensure that the configuration file is correct. Therefore, before doing any operation, we must consider whether this is reversible (after the operation, whether it can be restored to the way before the operation ). Therefore, before the modification, back up the data so that the operation has a reversible attribute. Even if the configuration file is deleted, there are also backup files to ensure us. Pay attention to the minimum principle of installation package minimization: Only install the basic package of the system, do not blindly seek for greater and install a lot of useless packages, this time our system load will increase, consume more hardware resources. If other packages or services are needed in the future, we can install them using tools such as yum. Minimal permissions: all users should give normal user permissions to ensure the minimum permissions required by this user. If necessary, the permissions of system files and directories should be controlled, note that different files have different permissions for users, which makes the files more secure.