First, the characteristics of Linux systems
(1) free
(2) efficient, safe, stable
(3) support a variety of hardware platforms
(4) user-friendly interface
(5) a powerful network functions
(6) supports multi-tasking, multi-user
Two, linux generally have three main parts: the core, the command interpreter layer, Utility
1. Kernel
The kernel is the heart of the system is the core program run programs and manage disks and printers and other hardware, the operating system provides a user interface to the user, it accepts commands from the user and sends commands to the kernel to execute.
linux kernel source primarily c language, associated with the drive to write only part of the assembly language Assembly.
2. Command Interpreter layer
It is the user interface system shell, a kernel and user interactive operation, an interface, which receives user input commands and to carry it into the kernel.
The presence of several linux operating environment, are desktop window manager and the command-line shell. linux system each user can have their own user interface, customize according to their requirements.
shell is a command interpreter that interprets commands entered by the user, and send them to the core.
Not only shell is an interactive command interpreter and a programming language.
3. Utility
Utilities can be divided into the following three categories:
1. Editor: for editing documents
2. Filter: means for receiving data and filtering data
3. The interactive program: information allows users to send or receive information from other users
Three, Linux's kernel version and release version is divided into two versions
1. kernel version
linux kernel version name is a certain rule format version number is usually the main version number, minor version number, revision number
Where there is a specific meaning minor version number, it is even if it means that the kernel can be assured of a stable version: If it is an odd number, it means that the kernel added a new function of some tests.
2. Release
Now the most popular kit comes with Red Hat, CentOS, Fedora, openSUSE, Debian, Ubuntu, Red Flag linux and so on.
four,
Small and medium enterprises in the choice of network operating system, first recommended Enterprise linux network operating system. First, because of its advantages of open source, and the other given its high security.
Fives,
The basic requirement to be successful we must be fully prepared to install linux hardware, hardware compatibility, multi-boot, disk partitions and installation methods, obtaining a distribution, view the hardware is compatible, select the appropriate installation. Do a good job, linux install journey will be smooth sailing.
Red Hat Enterprise linux7.4 support the vast majority of mainstream hardware device, but due to the hardware configuration, specification updates fast, if you want to know whether your hardware is supported by Red Hat Enterprise Linux7.4, the best access to the hardware certification pages, see which hardware through the Ret Hat Enterprise7.4 certification
1. The physical device naming rules
Everything is in linux system file, hardware is no exception.
System kernel udev Device Manager will automatically name the hardware regulate them, to let the user through the device file name can roughly guess the partition of property and equipment and other information.
Sixth, install the virtual machine
① successful installation of VMware Wirkstation
② click in the interface "to create a new virtual machine" option in the pop-up "New Virtual Machine Wizard" screen, select "Typical" Press the button. Then click the Next button.
③ Select "install the operating system later" radio button, click on the "Next" button
Note: Be sure to select "Install OS" radio button, if you select "Program CD-ROM image file" option button and select the downloaded RHEL 7 system image, you deploy virtual machines by default linux most streamlined installation policy system, but you will not be asked for the installation set of options.
④ Select a guest operating system type "linux" version of the "Red Hat Enterprise linux 7 64 Bits", then click "Next" button
After ⑤ Enter "Virtual Machine Name" and select the installation location, click "Next" button
⑥ the "maximum disk size" virtual machine system is set to 50.0GB, and then click "Next" button
⑦ Click "Custom Hardware" button
Interface ⑧ again, it is recommended to the virtual machine available amount of system memory to 2GB, the minimum should not be less than 1GB. The number of core performance host CPU is provided and the number of processors for each processor, and open virtualization capabilities ⑨ meter drive apparatus in this case should be "Use ISO image file" is selected in the image file system is now well RHEL
⑩VM Virtual machine software provides the user with three options network connection modes, namely bridge mode, only the NAT mode and the master mode, Pick 'Host Only Mode'
11. The device does not require a USB controller, sound card, printer and other equipment to get rid of them altogether after removing the card to avoid beep sound after a mistake, make sure your thoughts in future experiments will not disturb, and then click "Close "button.
12. After the return to the virtual machine configuration wizard interface, click "Finish" button to install and configure the virtual machine's successful completion