Linux system is a run with a code system a source is open to all based on Unix, multi-tasking and multi-user, was built by a person named Linus Torvalds with the help of a lot of programmers around the world, because it is a lot of the students were like to work on the Unix environment, but because of the high cost they could not buy it to work on it at home, but I thought this was the work of mini-like or so-called Clone for Unix by Linus copy. Of course it is built the nucleus or so-called pal Kernel of the system only, and then is integrated subsidiary of GNU software and it became different Ptozaath currently on the Internet in all its forms, such as Alridhat Red Hat, Debian and Aldepean and many others.
Another definition:
Linux is running a free open-source system (Open Source) provides all the advantages of operating systems from multiple users Multi-user, and the multiplicity of Multitask tasks, and virtual memory Virtual Memory, and advanced memory management, participating libraries software Shared libraries, as well as to support private networks and TCP / IP.
3 of the most important sentences in the whole definition:
1. open source (Open Source)
2. based on Unix Unix
3. Msaltahin Kernel and GNU
Based on Unix: I mean, who commands used in shell Shell
Be ordered Halnzam who is Unix
But the difference is that the Unix system and Bwlos Kpaar
But the Linux operating system on hardware Personal Free estimates in respect of the company's website
Linux features:
First, the credibility of the Linux system
I mean here is that the credibility of the companies that offer Linux you will not fool slogans and colorful letters about the possibilities of the system, but will reveal you everything you Amaisah disadvantage and thus be dealing with the credibility of Linux better than those fake credibility that tells you by Microsoft. All mentions the problem of the virus, which infects the Windows and Windows users who are Mhbuquen on the Internet and the computer makes the device works restart on its own after a specified period of time often is accurate. Do you remember this problem? Which they said virus !!! Ok I'll tell you the truth, which is that the problem were not Hakagueta Pfyrus !!! True my words may seem strange to some as especially lovers and windows Windows, but you proved my sincerity Why did not any anti-viruses Anti-Virus can be detected? Only updates that you download from the Microsoft site itself !!! Is it because all of these programs failed and ineffective? No, but the real reason lies in the error in the initial system settings, which have been identified through these settings to the device restarts after a minute of disable the RPC service which is the Remote Procedure Call !!! Which is the short service systems used to call another party and asked him to service. That is why we say these things not mentioned at all in Linux systems and will tell the truth and not ashamed of it.
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Second, the stability of Linux System Stability
Linux is one of the most powerful systems in the world in the strength and persistence and stability, Linux and follows the general rule, which says to him: that the user or the Admin Shater will not work to restart the system, but only in two cases, namely:
(1) that you install a new electronic piece New Hardware.
(2) to update or amendment to your core Ballenks Kernel.
For this is the strongest because you can be filled in the form for the rest of the hardware server and the rest of users without the need to work to restart as it gets with windows Windows operating system that you have to work to restart the system to just a normal software installation and only became you have a problem with the system as a whole. Also from things and problems that are not present in Linux that discharge of the memory process are properly and to the fullest there is no need, but the programs needed by the windows so that the discharge of memory you because it is clear the process does not work for programs (father) linked with the program (the children) have been closed down and leaves work (this is just a simple illustration pal who does not know Object Oriented). While unloading process in Linux is much better than this is not the father, but if the program survey also been confirmed from a survey of children except in the case so you experience these features of Linux that you can manipulate the programs that are currently running to more advanced way. It is also another issue that period, hours of work, the Linux machine can keep running for a week, month, year, and more and God knows, except in the case of a break in the power supply. The windows in the challenge that system operates more than 30 days maximum. Also another feature to make it more stable is the system the graphical X Window System of him is so beautiful it is, even if the desktop you have stopped working can close it by clicking on the (CTRL + ALT + BACKSPACE) which will close it in a short and then come back and operated from New work without having to restart the entire system. While in the windows get a simple problem you should work restart through him, a common buttons (CTRL + ALT + DEL). Linux also in other things that make it a very strong, if Suppose you run a particular command and it is this particular system itself and the systems it has become just depends Freezed to this problem will be resolved Balondoz? Sure, through three buttons !!! But here, just open Terminal again and who is a specialist commands Line, and close the Process program, which is turned off from work without the need to reboot all of these things make it is the strongest Meh a lot of other special stability and supporting features that are difficult to Nsrdha you in such a small subject.
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Third: quality system Linux Quality
Linux system is one of the more operating systems in order to Jodta few mistakes as possible to show users which often is a errors (logical) Logic Errors or so-called pal Bugs. There are several companies considering these regulations and provide detailed reports of these errors and through another study mention that the proportion of the problems that the Linux system does not exceed 25% Mqarndta with windows if I told you that for Stzaalon, and I think that mistakes is an integral part of the system itself. This of course is very short and simple.
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Fourth: the price of Linux system Price
The price of the Linux system is one of the most important features you should consider its companies and institutions profitability and even the government, because it is Linux systems free most of them, such as distribution of Fedora, a subsidiary of Red Hat, and Debian and many other free systems that could reach more than a thousand distribution. The distributions described by some as similar to the way Microsoft systems in the acquisition, through the purchase. I tell you that these systems are also completely free of charge, but what you pay for these companies is for technical support and free updates that connects you to go first. Such distributions are Red Hat distribution company which name the distribution Red Hat Enterprise Linux. Now to get back to get free copies of all the programs that you want them to all fields and Kha issue free of charge !!! For your information the same programs on free copies exist on the copies that come with technical support, including a clear difference of my words is the only technical support. The biggest proof of the sincerity of my words is no difference in the software on the Fedora and on the RHEL.
Fifth: system performance Performance
Of course, it is the performance of the most important and more characteristics that Eetmez out for Linux and other operating systems, almost no rivaled any other system in performance. To illustrate this aspect I will touch on a realistic example of which special mention here Google. Everyone knows Google sites and the competent things Internet search company, this company used approximately 3000 PC device any personal computer to manage us all the searches that we do !!! Shi wondrous true? Of course using Allred Hat Red Hat system on these devices that are simple devices in our view can all expect it to be huge and giant servers Servers All this is of course due to lack of cost and increase quality. Also Linux systems and particularly Allred Hat Red Hat supports the memory to 64 GB GB limit, and the number of processors that can be up to more than 16 processor. While other operating systems can not support more than 4 GB memory and 4 processors only. That is to say after the example of google.
Sixth: the impact of viruses on the system Security Issue
The Linux operating system has no viruses, but its strength is not affected by it, and so for many reasons: 1) the number of these viruses are very few not up to 100 virus !!! Just imagine 100? Mqarndta with a number of other systems mentioned drawback. 2) most of the system services have their own user name are responsible for these services. Of course these special services of users is characterized in order to make it difficult to link to it from outside the system and thus sabotage, and I'll come to clarify this paragraph more accurately at a later lesson, God willing. 3) Linux environment does not help the virus to work it is not like the rest of the systems that in order to implement a specific program must be to you the powers of implementation as especially when it comes to matters pertaining to the same system, this always be the powers of these Mattat user root and some times to another admin has the same functionality The root or less of them as assigned by the user root for him. For this access control to the user process name root process is not very easy as especially if we know that Linux system using the MD5 encryption, which is a one-way encryption system, means encodes but do not re-encryption once again. This system works encryption password to serve the root and other users of course, and then when the user tries to enter the system through his name and password, it is this system encrypts word entered and then compares the text of this with the stored texts in their own passwords, database and that file is / etc / shadow. Also of other things most based Linux systems with kernel Kernel her firewall Firewall so it is very easy to discover the programs that send information from you to the outside or open doors for intruders on your device, called Trojans, contrary to what can be found in other systems that most programs are her two faces, the face of Hassan, who like to see and we are working on is always the reverse side, which is the real purpose behind the making of this program. Add other before we move on to the next paragraph, Medm hackers in the world using Alnieks nix systems to get through the examination and the extent of security force Security for networks or devices, you wonder why? I'll leave the answer to this question you brother reader. At the end of this paragraph brother reader make sure that the system is protected in the world there is a 100% or in other words, full and perfect !!! This is because God is perfect and only Almighty God.
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Seventh: work on it through Terminal commands
Features Linux operating system is very large advantage to work through the use of commands and not graphical screens. Power comes these commands through it's very small programs can be downloaded to and from memory at very high speed and also can be linked with each other, which can make, for example, the result of a particular command is the entrance to another is through a thing as the Pipe, which is non-existent in the rest of the systems Operating that programming will have to program that integrates the two things to you. Course work through the command is a very professional work because it allows you to control the system more accurately than programs that rely on the nature of your mouse Mouse. What also discriminates work orders and as especially if they are on the Virtual Terminal or on an operational level Run Level does not support the graphics is the lack of memory reserved for monitors and other graphical programs allowing the device to work more efficiently. Of course, this whole case almost does not exist on other systems because it must work Zmn graphical environment.
Eighth: the existence of the work XServer graphical environment
Often they think of people's minds that the Linux operating system is designed only to work orders !!! This concept is very wrong because it supports graphical interfaces in very beauty and multiple, so the user can choose the graphical interface, which wants to work on them. The X Server is a system that provides Ballenks own graphical environment. As we have said that you can change your desktop Desktop with one another without having to restart the work of the Restart of the device and even without the problems happen. Also if there is a problem in the program running on the desktop it does not need to be restarted, as in the other systems do not, all you have to either enter through the Terminal normal or graphic or through the Virtual Terminal is working Kill for the program in which the problem this professionally or in a simple press the Ctrl + Alt + Backspace and on again for this whole system did not work and you restart the device Unlike other systems that rarely works and often working to restart.
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Finally IX: Open Source Open Source System
Here I say this may be the property of the rest of the Alomes characteristics enjoyed by the Linux operating system, because it allows you to familiarized themselves with the Hevrth Source Code First and the Second Amendment. Because of this feature, we find today thousands of Linux distributions and that each according to his needs or as it deems appropriate. It means possible to take full code and modify it fully and ultimately you be your own copy Smiha what you want and depending on your need, and thus be aware of all the small and large. This feature also helps in the maintenance of the system and the programs that it because it exposed everything in front of you, and I mean its own code, which allows you to update and amendment in order to keep pace with development, unlike other systems that will be forced to buy new versions. Add another, in the world of Linux and even Unix, possible that your problems are very easily solved !!! All of this because it is based on the idea of science for all, meaning in other words, access to a particular solution to the problem does not require you to pay them, but you will find thousands if not millions of people that are willing to lend you support.
But the most important characteristic of Linux is that it works on a large number of types of devices and processors. It works on x86 processors from Intel and I64, and SPARC processors from Sun, and DEC Alpha processors, Motorola, PowerPC, RISC, SGI, StrongARM, MIPS and others. This broad diversity in the types of devices covers the possibility of linkage and harmony for all these different types of work on a single network.
It provides Linux system open to other operating systems, for example, you can access files, whether under Windows system or NT or Win2000 or Solaris or OS / 2, Mac, or HP-UNIX or any other system from UNIX type. This gives Linux the ability to be a medial system between several operating systems in the network.
And in Linux can run programs written for UNIX or GNU because he originally worked in the same way. There are programs such as WINE allows drivers and Windows games to work in a Linux environment. There are also simulators to run programs DOS. There is also a Virtual Machine programs that are inside the device Default Linux to run like any other Windows system as a whole.
As for the use of Linux in personal computers at home or office, Vlins provides broad support for add-ons and cards Hardware of sound cards to display video and three support cards dimensions and FM cards the and entrances of PCMCIA type and USB to connect the different devices from the scanner Scanner and printers card and other various additives.
And it can be advantages to multiple users to find useful in your personal dramatically. As the multi-user system that provides protection for users and acts of sabotage intended unintended. With multiple users (cancellation) is determined powers and files allowed the user to see and files allowed to read files and allowed to run and which files are allowed to write. For example, in two at home running the Linux little brother I was given a user name and password to enter the system. Use of the device is limited to games and some applications and programs such as MP3 Player and texts and other processor. And no matter what happens with my little brother, and no matter how much the system can not be affected, because it is occupied by the software and have the powers set by the manager of the system. The most they can for my brother that is Akhrabh files that come back to him, such as text files that they and other files that belonged to a user.
Linux system and the complete freedom to choose and provides identification and user interface features, Vusbandh use a separate system, and for this you can choose the interface that you want. There are currently double sided pioneers for the production and use interfaces for Linux and applications on them, and the two bodies are GNOME and KDE. And both Alusbandtan provide high ease of the user and the allocation of customization possibilities are high and also Mjanetan. The only thing that determines which interface you want is your choice.
With the increase in the number of Linux users in the world increased attention to the major software companies in this new system, and began to provide the famous to work on their software to Linux. Fsharkp IBM has provided a large number of software ranging from its famous Via Voice to other programs on the programming and development. And Corel Corporation Corel Linux, one of the most important versions of Linux for the new user and issued as Corel Draw issued 8 and Word Perfect to work in a Linux environment. Company and Sun provided the files in the language of development in JAVA Linux and also followed the issuance of Star Office to be office suites (Office Suits) leading Linux. As there are a large number of well-known games such as Quake 3 and Civilization and Tycoon and many others working in Linux now.
As for the Arabic language support in Linux, it is on the rise, but it's still the first in the road. The reason for the delay is a delay interest of Arab countries in this system, and thus delayed the attention of programmers and developers the Arabs. As including the source code of the system are available, for programmers and developers and Arab companies that are trying to localize the system, we do not have to wait an American or European company to do Arabization. At present there are Internet browsers in Arabic, and there are programs for the Arabization of interfaces to use, but to date there is no office package supports the Arabic language.
As for the reasons for his preference for the Windows system, they are many ... To start with, because Linux is free, you can get on a system with all what he is doing and Windows steadily higher and higher security and Free price! And this offer is hard to resist. The second reason is safety available in the system. Based on statistics McAfee's leading company in the field of virus protection, found in the Windows environment for at least 58,000 virus type, and are writing daily and deploy 80 new kind around the world. And to look at these statistics and see how easy writing subversive program in a language like VBScript confirms that the Windows environment is a fertile environment for the spread of viruses and work. While Linux environment, it is valid for the life of these viruses and their spread. The number of virus in Linux is very little not to exceed a few tens to mostly not of a subversive effect. And if connected the Linux one day message titled I LOVE YOU Vavchaa do not be afraid and open the file containing the virus, and the virus was reading the text of the written roll VBScript and see how much is the simple text of the virus, which has cost the world and the millions Orabhm! The cause of the damage that has occurred is not a virus, but the lack of safety in the Windows environment.
The third reason, which is no less important than the previous reasons is the stability of the system. Almost every user of Windows faced a message "This program has performed an Illegal Operation and it will Shut Down" or message General Fault Error or many error messages incomprehensible or logical, and these messages are receiving the blame always on the programs, and not on the weakness of the system! The other type of messages is those that appear ominous blue screen. In Linux system users do not go through these nightmares, the system work steadily and without stopping for any reason. And another important part of the stability of the system is maintaining its resources. It repeats the advice of computer experts restart restarting Windows to resolve most of the slow pace of the sudden lack of programs or work problems, because it is known that during your work in Windows, the device resources of memory and other leakage and are depleted. Pena in Linux resources are preserved, if I use a particular program 20% of the resources while working, after completing the 20% return of the resources available for use, and this does not ever need to restart the device to restore resources.
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