List of commonly used operating system and little introdution to them.

List of commonly used operating system and little
introdution to them.
WINDOWS it is a product of Microsoft famous for
graphical user interface popular versions are
Windows 8,windows 7,windows XP.
UBUNTU it is a Linux based operating system also
a GUI most popular platforms of Linux.
FEDORA it is another Linux based operation system
BACKTRACK operating system heavily loaded
applications for hacker very popular among
hackers
versions backtrack 4,backtrack 5 r1,r2,r3.
ANDROID it is a operating system for portable
devices like phones and tablets various versions
are Kitkat ,jellybean and iceream sandwitch.
iOS one of the most popular operating system used
in iPhone and iPad.
DOS an operating system from Microsoft.
which of them u use???
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