Every desktop computer uses an operating system. The most popular operating systems in use today are:
Linux is an operating system -- very much like UNIX -- that has become very popular over the last several years.
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Operating systems are computer programs. An operating system is the first piece of software that the computer executes when you turn the machine on. The operating system loads itself into memory and begins managing the resources available on the computer. It then provides those resources to other applications that the user wants to execute. Typical services that an operating system provides include:
- In the area of desktop and laptop computers, Microsoft Windows is the most commonly installed OS, at approximately between 77 and 87.8% globally. Apple's macOS accounts for approximately 9.6–13%, Google's Chrome OS is up to 6% (in the US) and other Linux distributions are at around 2%. All these figures vary somewhat in different markets,.
- Linux (/ ˈ l i n ʊ k s / LEEN-uuks or / ˈ l ɪ n ʊ k s / LIN-uuks) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged in a Linux distribution. Distributions include the Linux kernel and supporting system software and libraries, many of.
- Best for computers Opera browser. The Opera browser includes everything you need for private, safe, and efficient browsing, along with a variety of unique features to enhance your capabilities online. The Opera browser for Windows, Mac, and Linux computers maximizes your privacy, content enjoyment, and productivity.
Explore the world of Mac. Check out MacBook Pro, iMac Pro, MacBook Air, iMac, and more. Visit the Apple site to learn, buy, and get support. My original testbed was a Late 2005 2.3 GHz Power Mac G5 Dual with 3 GB of RAM and two hard drives, one with OS X 10.4 Tiger, the other with OS X 10.5 Leopard.It’s my most powerful PowerPC Mac, so I figured it would be a good way to take Linux for a spin. Step one is to choose your distribution.
- A task scheduler - The task scheduler is able to allocate the execution of the CPU to a number of different tasks. Some of those tasks are the different applications that the user is running, and some of them are operating system tasks. The task scheduler is the part of the operating system that lets you print a document from your word processor in one window while you are downloading a file in another window and recalculating a spreadsheet in a third window.
- A memory manager - The memory manager controls the system's RAM and normally creates a larger virtual memory space using a file on the hard disk. (See also this Question of the Day.)
- A disk manager - The disk manager creates and maintains the directories and files on the disk. When you request a file, the disk manager brings it in from the disk.
- A network manager - The network manager controls all data moving between the computer and the network.
- Other I/O services manager - The OS manages the keyboard, mouse, video display, printers, etc.
- Security manager - The OS maintains the security of the information in the computer's files and controls who can access the computer.
Linux For Mac Computers Refurbished
An operating system normally also provides the default user interface for the system. The standard 'look' of Windows 98 includes the Start button, the task bar, etc. The Mac OS provides a completely different look and feel for Macintosh computers.
Linux is as much a phenomenon as it is an operating system. To understand why Linux has become so popular, it is helpful to know a little bit about its history. The first version of UNIX was originally developed several decades ago and was used primarily as a research operating system in universities. High-powered desktop workstations from companies like Sun proliferated in the 1980s, and they were all based on UNIX. A number of companies entered the workstation field to compete against Sun: HP, IBM, Silicon Graphics, Apollo, etc. Unfortunately, each one had its own version of UNIX and this made the sale of software difficult. Windows NT was Microsoft's answer to this marketplace. NT provides the same sort of features as UNIX operating systems -- security, support for multiple CPUs, large-scale memory and disk management, etc. -- but it does it in a way that is compatible with most Windows applications.
The entry of Microsoft into the high-end workstation arena created a strange dynamic. The proprietary operating systems owned by separate companies and the lack of a central authority in the UNIX world weaken UNIX, but many people have personal problems with Microsoft. Linux stepped into this odd landscape and captured a lot of attention.
The Linux kernel, created by Linus Torvalds, was made available to the world for free. Torvalds then invited others to add to the kernel provided that they keep their contributions free. Thousands of programmers began working to enhance Linux, and the operating system grew rapidly. Because it is free and runs on PC platforms, it gained a sizeable audience among hard-core developers very quickly. Linux has a dedicated following and appeals to several different kinds of people:
- People who already know UNIX and want to run it on PC-type hardware
- People who want to experiment with operating system principles
- People who need or want a great deal of control over their operating system
- People who have personal problems with Microsoft
In general, Linux is harder to manage than something like Windows, but offers more flexibility and configuration options.
These links will help you learn more:
- Linux.com - Linux news
- Red Hat - Red Hat packages the Linux distribution in a CD and sells the CD, making it easier to get started with Linux.
- Giving It All Away - Article on Linus Torvalds, the creator of Linux
Install Linux On Mac
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