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FP501- OPEN SOURCE OPERATING SYSTEM. CHAPTER 2: BASIC OF OPEN SOURCE OPERATING SYSTEM Part 1. Before Linux: Commercial UNIX. 1983, AT&T is splitted  It can sell software There is a great market for Operating System Major hardware vendors need OS

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fp501 open source operating system

FP501- OPEN SOURCE OPERATING SYSTEM

CHAPTER 2: BASIC OF OPEN SOURCE OPERATING SYSTEM

Part 1

before linux commercial unix
Before Linux: Commercial UNIX
  • 1983, AT&T is splitted  It can sell software
  • There is a great market for Operating System
    • Major hardware vendors need OS
  • AT&T is selling UNIX System v4 and licensing it
    • AIX for IBM, HP-UX for HP, …
  • BSD is a real danger for AT&T’s market
    • BSD is not supported
    • BSD should not be used in commercial
end of unix
End of UNIX
  • AT&T sold UNIX as much as possible
    • Novel bought UNIX code and License
  • Novel sold the code and license after 2 years
    • Santa Cruz Operating System
  • Microsoft developed Xenix
    • Based on UNIX VIII
    • It was NOT successful
before linux minix
Before Linux: Minix
  • Tanenbaum developed free OS
  • Its name is Minix
  • Minix is based on UNIX
  • Source code available, Modification is restricted
  • It cannot run on 32bit processors
staring linux
Staring Linux
  • Develop a free OS for 32bit (Intel) processors
    • Title of a Finnish student’s MS thesis
  • The student is Linus Benedict Torvalds
linux was born
Linux was Born
  • Birthday
    • 25 August 1991
    • Linux 0.02
    • It was developed in MINIX
    • It run on 80386 (32bit microprocessor)
    • It had a terminal emulator & C compiler
    • Linusposted the code to Minix mailing list
    • He requested feedback
slide7

2.1.2 Benefits of Linux

  • Reliability
  • The majority of Linux variants and versions are notoriously reliable and can often run for months and years without needing to be rebooted.

Majoriti varian dan versi Linux yang terkenal boleh berfungsi/berjalan selama beberapa bulan dan tahun tanpa perlu reboot.

  • Scalability
  • Support Wide Range of Hardware
slide8

3) Security

  • Linux programs are designed to operate in a more secure manner as isolated processes.
  • Linux (and Mac OS X) prevent any real damage occurring on a system unless the user is logged in with the highest levels of permissions as root or administrator. 

Program Linux direka bentuk untuk beroperasi dengan cara yang lebih selamat

Linux (dan Mac OS X) mengelakkan sebarang kerosakan sebenar yang berlaku pada sistem kecuali pengguna log masuk dengan tahap tertinggi kebenaran sebagai root atau pentadbir.

slide9

2.1.3 Differences between Linux kernel and Windows kernel

Kernel???

  • Kernel is the main component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level.

A kernel connects the application software to the hardware of a computer

comparing the architectures
Comparing the Architectures
  • Both Linux and Windows are monolithic
    • All core operating system services run in a shared address space in kernel-mode

Semua perkhidmatan sistem teras operasi yang dijalankan dalam ruang alamat dikongsi dalam mode kernel

    • All core operating system services are part of a single module

Semua perkhidmatan teras sistem operasi adalah sebahagian daripada modul tunggal

Windowing is handled differently:

    • Windows has a kernel-mode Windowing subsystem
    • Linux has a user-mode X-Windowing system
kernel architectures

Windows

Application

User Mode

Kernel Mode

Application

System Services

Linux

Process Management, Memory Management,

I/O Management, etc.

Device

Drivers

X-Windows

Win32

Windowing

User Mode

Kernel Mode

Hardware Dependent Code

System Services

Process Management, Memory Management,

I/O Management, etc.

Device

Drivers

Hardware Dependent Code

Kernel Architectures
slide12

Fedora Core

Official website:

wwwwww.fedoraproject.org

slide13

2)Knoppix

Official website:

www.knoppix.org

slide14

3) Debian GNU/Linux

Official website:

www.debian.org

slide15

4) OpenSUSE

Official website:

www.opensuse.org

slide16

5) Ubuntu

Official website:

www.ubuntu.com

slide17

6) Slackware

Official website:

www.slackware.com

slide18

7) Gentoo

Official website:

http://www.gentoo.org