بسم الله الرحمن الرحيم What is an operating system? 1- An interface between the user and Hardware 2- Control Program 3- Resource Manager.

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Presentation transcript:

بسم الله الرحمن الرحيم What is an operating system? 1- An interface between the user and Hardware 2- Control Program 3- Resource Manager

Main function of Operating System 1- process Management 2- Memory Management 3- File Management 4- I/o Management

Example of O.S 1- Dos 2- Windows 3- Linux 4- OS/2 5- Mac

10 years ago Linux IBM Linux Sun Corel DEC DELL

Linux ( within six words ) :- Open source. Multitask. Multi-user. Virtual memory. Shared libraries. Network (TCP/IP).

Linus Torvalds History Date : Name: Job : Idea : 1945 Einstein Head of Microsoft Family Game     Student Free OS. Bill Gate  Scantiest 

Linux Features:- CPUs. ( x86, I64, SPARC, Motorola, PowerPC, RISC,.. etc. ) File systems. ( Win2000, OS/2, Mac, HP-UX,.. etc.) Applications. ( UNIX, Windows, DOS, Mac, OS/2,.. etc.) PC Hardware. ( Audio, Video, FM, PCMCIA, USB,.. etc. ) Security. ( Files, Data, network) GUI ( Graphic User Interface ). ( KDE, GNOME,.. etc.)

Between Cost. Viruses. Stability. Monopoly. Source. Linux & Windows Free XP 300$ or more Very …??? No …??? Free (For ever) Unitl now ???

General system structure of UNIX Utilities & Tools Shell Kernel Hardware User & Applications

وتوتة توتة خلصت الحدوتة وتوتة توتة خلصت الحدوتة