The document provides an overview of operating systems, focusing on Linux, which was developed by Linus Torvalds in 1991 as an open-source project. It contrasts Linux with Windows in terms of development, cost, stability, and user interface, highlighting that Linux is widely used in servers and hacking tools. Additionally, it mentions various Red Hat certification programs for system administrators and engineers.

1. LINUX
FREEDOM.CHOICES.BEAUTIFUL
BY Prateek arora

2. What is operating system ?

3. • Operating system is an intermediary b/w user and computer
hardware.
• It's provides conveniently & efficiently environment to user.
• An os controls or help in the allocation of resources and services
such as memory,processors,devices and. Information.
• In a simple word i can say that :-
• os is a program that run from start of pc to
shutdown of pc. It’s also called as kernel.

5. What’s is Linux ?
OS
Linus unix
GNU

6. • Linux was developed by Linus Torwalds Of finland, who currently owner
of linux trademark.
• linux is an os which is developed by a collaboration , it means no
company is responsible for its development.
• Using open source code of LINUX KERNEL,Company have been
developing os based on LINUX KERNEL.its called "linux distributions".

10. • Linus Torvalds , was the student of university of
Helsinki in Finland , Developed linux in 1991.
• IT,s main purpose to Develped LINUX was released
linux free on INTERNET.
• LINUX is the name of KERNEL.
• KERNEL is a program whish is a central CORE of os.
LINUX
UNIX
GNU

12. DISTRO
Linux Mint
openSUSE
Ubuntu
Fedora
RedHat
Debian
CentOS
Debian

13. Difference b/w Distro

15. SERVER

16. SOURCES Linux Windows
Cost Free For Everyone. $119-199.99
Development & Distribution Open sources Development. Developed & Distribution by
Microsoft.
Licence Free Proprietary
Update method Different Windos update
Default User Interface Gnome or KDE(Depends on distro) Graphical (Windows Aero)
Stability Linux systems are well known for
their ability to run for years without
failure; in fact, many Linux users have
never seen a crash.
Windows servers must often be
defragmented frequently, that's all
but eliminated on Linux.

19. Android (operating
system)

20. User share of operating systems
NOTE:- IN south Area 99% user are using linux.

22. Most Hacking Tools Are Written for Linux:-
Well over 90% of all hacking tools are written for Linux. Of course, there are
exceptions like Cain and Abel and Havij, but those exceptions simply
emphasize the rule. Even when hacking tools such as Metasploit or nmap are
ported for Windows, not all the capabilities transfer from Linux.

23. Red Hat Certified System Administrator (RHCSA)
Red Hat Certified Engineer (RHCE)
Red Hat Certified Architect (RHCA)
RHCA: Cloud
RHCA: Datacenter
RHCA: Application platform
RHCA: Application development
RHCA: DevOps
Red Hat Certified Engineer in Red Hat OpenStack
Red Hat Certified System Administrator in Red Hat
OpenStack
If you pass more than five, then you achieve a higher level of RHCA. .... Ceballos used the knowledge he gained
becoming a Red Hat Certified Engineer to solve ... And u can also get 50% discount on other Certification