gnu / linux
DESCRIPTION
GNU / Linux. A free operating system. History What can you find on a Linux OS Linux Economy. Summary. GNU/Linux is a Free Operating System It runs on different architectures from Intel to Motorola It can replace Windows XP or Mac OS X It is also used in embedded systems. - PowerPoint PPT PresentationTRANSCRIPT
GNU / LinuxGNU / LinuxA free operating system
SummarySummary
History
What can you find on a Linux OS
Linux Economy
What is GNU/Linux …What is GNU/Linux …
GNU/Linux is a Free Operating System
It runs on different architectures from Intel to Motorola
It can replace Windows XP or Mac OS X
It is also used in embedded systems
Linux was born in 1991 in FinlandLinux was born in 1991 in Finland
To become a free 3D desktop OS To become a free 3D desktop OS ……
In the beginning In the beginning there was the gnu…there was the gnu…
Richard Stallman wrote the GNU manifesto in 1984
GNU was the name for the complete Unix-compatible software system which Stallman was writing at the time
What does GNU stand for ?
GNU is Not Unix◦ GNU is Not Unix
GNU is Not Unix◦ GNU is Not Unix
…
Why UNIX-like ?Why UNIX-like ?
“Unix is not my ideal system, but it’s not too bad”
Unix is a OS created with thephilosophy “everything is a file”
Unix was at the time a very expensive piece of software used by scientists and the military
Is Richard Stallman The Messy ?!Is Richard Stallman The Messy ?!
• Born in 1953 in Manhattan, New York
• Student at Harvard
• Programmer at the Artificial Intelligence Laboratory of the MIT
• In the 70’s he was an active member of the hacker community of the MIT
• He finally founded the GNU movement in 1983. He is the author of “emacs”
Stallman the activistStallman the activist
In January 1984, he quit his job at MIT to work full time on the GNU project
In Venezuela, Stallman has delivered public speeches and promoted the adoption of free software
Meetings with the government of the Indian State of Kerala, he persuaded officials to discard proprietary software
Why do we Why do we call this system Linux ?call this system Linux ?
Stallman did not write the Kernel
The Kernel is the heart of the GNU system
The man who wrote it is called Linus Torvalds
He is from Finland that’s mostly why the
logo is a penguin
Linus TorvaldsLinus Torvalds
Born in Finland in 1969
At the age of 21 he posted to the minix community his first OS mostly written in C
By the end of September 1991 the version 0.01 of Linux was released on the internet with 10 239 lines of code
Familly of GNU/LINUXFamilly of GNU/LINUX
DebianFedoraMandrivaRed HatSlackwareSuSEGentoo
History of Unix-like systemsHistory of Unix-like systems
SummarySummary
History
What can we find on this OS
Linux Economy
The Kernel featuresThe Kernel features
True preempting multi-taskVirtual memoryShared libraries…Memory managementInternet ProtocolThreading
All you need to run a system
The user interfacesThe user interfaces
The programmerswill find their classicalinterface
The user interfacesThe user interfaces
The user interfacesThe user interfaces
The user interfacesThe user interfaces
Open Source SoftwaresOpen Source Softwares
Web BrowsersFTP ClientsHttp ServersImage Processing softwareInstant MessengersOffice SuiteDevelopment toolsGNU Compiler Collection (gcc)Etc …
Software Internet Depositary Management
The GNU Compiler CollectionThe GNU Compiler Collection
Originally named the GNU C Compiler started by Richard Stallman in 1985
GCC provides compilers for C, C++, Java, and Fortran …
The Linux Kernel is compiled with GCC
It supports dozens of target processors
GCC is now maintained by a varied group of programmers from around the world
GNU/Linux as a ServerGNU/Linux as a Server
Historically the kernel has been made to be a server
Out of the top 500 supercomputers 75.2% run Linux
Eight of the ten most reliable internet hosting companies run Linux on their web servers
GNU/Linux as an GNU/Linux as an Embedded systemEmbedded system
Television set-top boxes, mobile phones, and handheld devices use Linux
Linux has become a major competitor to the proprietary Symbian OS found in many mobile phones
Several network firewall and router standalone products
The Korg OASYS music workstation synthesizer also runs Linux
SummarySummary
History and presentation of the protagonist
What can we find on this OS
Linux Economy
Free software, as defined by the Free Software Foundation, is software which can be used, copied, studied, modified and redistributed with little or no restriction
This foundation gave birth to the Global Public License (GPL)
What is free and what is notWhat is free and what is not
Linux but not for FreeLinux but not for Free
Some of Linux distributions are freely downloadable and some are sold with proprietary software
Freeware such as adobe acrobat are not open source projects
There is a difference between the cost and whether you have access to the code
Linux BusinessLinux Business
Many firms sell Linux OS
Red Hat or Mandriva are not free
The kernel cannot be soldbecause it is distributed under GPL license
Maintenance services can be sold
Documentation can be sold
Still time ? Demonstration !Still time ? Demonstration !