What is Linux?

Linux is complete multitasking and multi-user operating system base/clone from UNIX operating system.

Performance similar to high-end UNIX operating system.

Linux originally developed for 32-bit x86-based PC (Intel CPU base), platform.32-bit or 64-bit architecture

Today Linux operating system also runs on 32-bit or 64-bit architecture on the Compaq Alpha AXP, Sun SPARC and UltraSPARC, Motorola 68000, PowerPC, PowerPC64, ARM, Hitachi SuperH, IBM S/390, MIPS, HP PA-RISC, Intel IA-64, DEC VAX, AMD x86-64, AXIS CRIS, and Renesas M32R architectures.

Linux Kernel.

•  The core of operating system.

•  The interface between system hardware and software.

•  Tranlates hardware language to or that can be use by the operating system (Hardware driver).

•  Developed from scratch by Linus Torvalds with assistant programmers, hackers around the globe.

• Actually ‘Linux’ is just the kernel, all Linux Operating System distributions used Linux kernel as the kernel for their operating system.

Linux Associated Utilities.

• Standard tools found on (nearly) all Linux systems

• Many important parts of software, tools, compilers, debugger, editor, application utilities come from the GNU project.

• Massive number of software packages for all kind of purposes.

• Free Software Foundation’s project to make a free Unix

• Some claim the Linux Operating System as a whole should be call ‘GNU/Linux’

Linux distributions.

Linux distro is complete Linux operating system, ready to install and can be running on your PCs or Servers.

• Usually call Linux Distro.

• Gather and compile by various vendors.

• Free and open source.

• Kernel plus utilities plus other tools, packaged up for end users.

• Generally with installation program

• Distributors include: Fedora Core, Red Hat, Debian, SuSE, Mandrake

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