What basic knowledge Cloud Computing must learn and how to analyze Linux knowledge points
What basic knowledge must be learned in cloud computing? How to analyze Linux knowledge points? Authoritative organization data analysis shows that 99% of enterprises and individuals use open source software in their IT systems. Linux is one of the more popular open source software, and it is also a necessary knowledge point in cloud computing basic learning. Many beginners think that the knowledge of Linux is complicated and it is not easy to learn, so I will give you a brief comb.
What is Linux? Linux is a multi-user, multi-task operating system and free software. It has a good user interface, supports multiple processor architectures and is easy to port. Strictly speaking, Linux is not an operating system, but a kernel in a Linux system, that is, a platform for communication between computer software and hardware; the full name of Linux is GNU/Linux, which is a real Linux system.
After understanding the basic concepts of Linux, you also need to master Linux-related operations and commonly used Linux commands, which is also the key knowledge in the Zhengzhou cloud computing basic learning tutorial.
Directory: "/" is the top directory of the system, called the root directory, "/ bin,/root,/home,/etc.." These directories are secondary directories and are automatically established when the system is installed. Different directories store different files, for example, the "/ bin" directory is used to store system commands, "/ root" is the superuser home directory, "/ home" is the ordinary user home directory, and "/ etc" manages files for most systems.
Path: in Linux, everything is stored on the computer as a file, so you need a path to find the files in the Linux. The path is divided into absolute path and relative path. The absolute path is the complete location of the file in the computer, such as the absolute path of the "passwd" configuration file is "/ etc/passwd", the relative path is the abbreviation of a name relative to the current location of the file, this name will not start with /, and the name will automatically add the value displayed by pwd.
Virtual machine: when using Linux system, in order to prevent error operation from causing irreparable damage to Linux, or to meet the needs of specific circumstances, virtual machine software came into being. The virtual machine can imitate the real operating system and has the reset function, so in the process of learning the operation of the Linux system, most applications are completed in the virtual machine.
Common Linux commands: display date instruction date, display calendar instruction cal, easy to use calculator bc, important hotkeys [Tab], [ctrl]-c, [ctrl]-dpenman, write data synchronously to disk sync, commonly used shutdown instruction shutdown, switch execution level init, change file ownership group chgrp, change file owner chown, change file permissions chmod, change directory cd Show the current directory pwd, create a new directory mkdir, delete the "empty" directory rmdir, ls the display of files and directories, copy files or directories cp, remove files or directories rm, move files and directories or rename mv, get the file name and directory name of the path: basename, dirname, only look at the first few lines of head, only look at the last few lines of tail, and so on.
If you want to quickly grasp the cloud computing technology needed by the enterprise and accumulate more practical experience in cloud computing, you can choose professional study and quickly transform from zero to one to become a cloud computing engineer needed by the enterprise.
