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Learn about operating systems, their role as an interface between users and hardware, and their main functions such as process, memory, file, and I/O management. Explore examples like DOS, Windows, Linux, OS/2, and Mac, and discover the history, features, and differences between Linux and Windows. Discover the benefits of Linux, including its compatibility with various CPUs, file systems, applications, PC hardware, security, and GUIs.
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بسم الله الرحمن الرحيمWhat 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 Sun Corel DEC DELL Linux
Linux ( within six words ) :- • Open source. • Multitask. • Multi-user. • Virtual memory. • Shared libraries. • Network (TCP/IP).
History • Date : 1945 1967 1992 1982 • Name: Einstein Linus Torvalds Bill Gate • Job : Student Head of Microsoft Scantiest • Idea : Free OS. Family Game http://www.li.org/linuxhistory.php http://www.linux10.org/history/
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 Linux & Windows Free • Cost. XP 300$ • Viruses. 1 - 10 58000 or more • Stability. Very …??? • Monopoly. No …??? • Source. Free (For ever) Unitl now ???
User & Applications Utilities & Tools Shell Unix Kernel Hardware General system structure of UNIX