Notes about linux

For more information about linux-general Linux technology-Linux technology and application, see the following. Linux is a real multi-user, multi-task operating system. It can be used on individual machines and workstations, or even make individual machines competent for the functions of workstations and servers.

Linux has many versions. Core version and release version. It is a free software, open, and source code sharing can be developed multiple times.

Operating systems, as the basic platform for all software, have received increasing attention from the industry. The development of science and engineering puts forward higher requirements on computer software and systems.

First, the basic knowledge: Overview, system installation and general configuration, the use of extremely common commands. Next we will introduce the system structure and kernel. The next step is linux program design and development, including shell programming, development tools and advanced programming, system calls and library function applications. Finally, there is systematic management, including regular system management and network management.

And introduction to embedded systems. Generally, embedded computer systems are short for embedded systems. Unlike a general computer system, it does not appear as an independent physical device, that is, it does not have the same appearance. Its components are embedded in the device according to the needs of the main device and application, play the role of computing, processing, storage, and control. The system consists of embedded processors, supporting hardware and embedded software. A processor is usually a single-chip microcomputer or microcontroller. Its supporting hardware includes storage media, communication components, and display components. embedded software includes drivers supporting hardware, operating systems, supporting software, and Application Middleware. These software and hardware are combined to form an integrated software system for specific systems. It is concluded that the appearance is unique and is applicable to different applications. The application is fixed, no longer programming and development, and runs together with the operating system.

Different types of embedded systems can be categorized from different perspectives, such as hardware platforms, scales, timelines, application fields, operating systems, and operating modes (commercial and open-source ). Generally, the embedded processor and supporting hardware are determined, and the main work and development is focused on embedded software, including the operating system and application software.