WHAT IS UNIX? :

* Unix is a multitasking ,multiuser operating system .Here lies the difference of unix with MS-DOS.

* OK Fine.But How do i begin unix???

*First Of All ,in Unix ,the  user has to make himself identified to the OS.
It is done in 2 steps: login and password.

*Superuser :root creates your login and password.

 * Each unix system has a hostname assigned to it.This  identifies individual machines in the network. Even if your machine is not on the network, unix assignes hostname to it.
This hostname can be identified by the  following command:

$ hostname -i .                                                                                                                                               say ,you are sitting in your CC computer and you want to know the IP (more about it later) of your computer ,then you type this command .
 

* LINUX is free!!! Unix has many versions and license problem too.

Moving to Linux and its features :

* Full multi-tasking and 32-bit support.
* X-window system
* TCP/IP (Transfer Internet Protocol/Internet Protocol): access to internet
* Virtual Memory And Shared Library.

DOWNSIDE :Linux is a hacker's project.

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