Quimica

Features Linux

* Works in 386 protected mode.

* Memory-protection between processes, so that no one can hang the system.

* Cargo Demand executables: Linux only reads from disk those parts of a program that are currently being used.

* Copy-on-write policy to compare units of pages among executables: this means that multiple processes can use the same memory to run. When onetries to write to that memory, the page (4 Kb memories) is copied to another location. Copy-on-write has two benefits: it increases the speed and reduces memory usage.

* The memory is managed as a unified resource for user programs and disk cache, so that all free memory can be used to cache and this can in turn be reduced when running large programs.

* Support for many national orcustomized keyboards and is quite easy to add new dynamically.

Functions

* The main functions of this magnificent operating system are:

* Multitasking system: In Linux you can run several programs at once without having to stop the execution of each application.

* Multiuser System: Multiple users can access the applications and system resources simultaneously Linux. And ofcourse, each of them can run multiple programs at once (multitasking).

* Programmable Shells: A shell orders connects a user with the Linux kernel (the core of the system), and can be modified to programmable suit your needs. For example, it is useful to perform background processes.

* Device Independence: Linux supports any device (modem, printer), because every once installed a new one isadded to the kernel or the link with the device driver, causing the Kernel and merge link. Linux has a wide adaptability and is not limited as other operating systems.

* Communications: Linux is the most flexible system to connect to any computer in the world. Internet was created and developed in the world of UNIX, Linux and therefore has the greatest capacity to navigate as UNIX and Linuxsystems are virtually identical. With Linux you can set up a server in your own home without having to pay huge amounts of money they ask for other systems.

TYPES OF LINUX

* Ubuntu

Fedora (Red Hat)
*
Debian
*
Suse

* Mandriva

* Gentoo

* Slackware

Installation

Today, Red Hat distribution is one of the most popular distributions as the installationprocedure is very simple. In fact, this procedure simply asked to choose from a list of major peripheral devices and choose the languages ​​and packages will be installed. The installation steps are:

* Language choice: choose the language for the installation procedure.

* Keyboard choice: If you want a French keyboard having key characters, choose fr-latin1.

* Choice of installationmedia: if you own a Linux installation CD, select CD-ROM. Otherwise (in case you have downloaded it), choose Hard drive.

* Installation style choices: You can choose to upgrade an existing system or a full installation from scratch.

* Type of installation: the system allows you to choose between workstation, server or custom. The choice of a custom installation will give you moreflexibility.

* Choice of SCSI adapter: if you have a SCSI adapter, you should choose yes to this question. The installation system will try to detect your hardware. Should this not throw anything automatic search results, simply enter a line parameters to specify what type of SCSI adapter is as well to know the IRQ and memory address. The command line will find a card "AHA1520" with address0x140 and IRQ 10:
* aha152x = 0x140, 10

* Hard disk partition: this distribution will allow you to partition the drive at this level of the installation process (unless already done previously) and allows you to choose between disk and fdsik druid. Election of the hard drive.

* Hard disk partition: The software prompts you to choose from a list the hard drive you want to partition....