A Linux-based system is a modular Unix-like operating system. It derives much of its basic design from principles established in Unix during the 1970s and 1980s. Such a system uses a monolithic kernel, the Linux kernel, which handles process control, networking, and peripheral and file system access. Device drivers are either integrated directly with the kernel or added as modules loaded while the system is running.
Separate projects that interface with the kernel provide much of the system's higher-level functionality. The GNU userland is an important part of most Linux-based systems, providing the most common implementation of the C library, a popular shell, and many of the common Unix tools which carry out many basic operating system tasks. The graphical user interface (or GUI) used by most Linux systems is built on top of an implementation of the X Window System.
Some components of an installed Linux system are:
- A bootloader - for example GRUB or LILO. This is a program which is executed by the computer when it is first turned on, and loads the Linux kernel into memory.
- An init program. This is a process launched by the Linux kernel, and is at the root of the process tree: in other terms, all processes are launched through init. It starts processes such as system services and login prompts (whether graphical or in terminal mode)
- Software libraries which contain code which can be used by running processes. On Linux systems using ELF-format executable files, the dynamic linker which manages use of libraries is "ld-linux.so". The most commonly used software library on Linux systems is the GNU C Library.
- User interface programs such as command shells or windowing environments
Read more about this topic: Linux
Other articles related to "design, designs":
... Structured VLSI design is a modular methodology originated by Carver Mead and Lynn Conway for saving microchip area by minimizing the interconnect fabrics area ... In complex designs this structuring may be achieved by hierarchical nesting ... Structured VLSI design had been popular in the early 1980s, but lost its popularity later because of the advent of placement and routing tools wasting a lot of ...
... The design also allowed for Shea Stadium to be expandable to 90,000 seats (by completely enclosing the grandstand), or to be later enclosed by a dome if warranted ...
... Direction of a Musical, Book of a Musical, Original Score, Choreography, Costume Design, Lighting Design and Scenic Design ...
... For more design details, see Boeing 747-400, 747-8, and 747SP ... The Boeing 747 is a large, wide-body (two-aisle) airliner with four wing-mounted engines ...
... "Process design" (in contrast to "design process" mentioned above) refers to the planning of routine steps of a process aside from the expected result ... Processes (in general) are treated as a product of design, not the method of design ... information age, consultants and executives have found the term useful to describe the design of business processes as well as manufacturing processes ...
Famous quotes containing the word design:
“Humility is often only the putting on of a submissiveness by which men hope to bring other people to submit to them; it is a more calculated sort of pride, which debases itself with a design of being exalted; and though this vice transform itself into a thousand several shapes, yet the disguise is never more effectual nor more capable of deceiving the world than when concealed under a form of humility.”
—François, Duc De La Rochefoucauld (16131680)