INTRODUCTION TO LINUX

RED HAT LINUX  is a Unix based operating system , but it is not a unix operating system.

It has been developed on UNIX platform.

Its File system are Unix file system-ufx

DEVELOPED by_______   LINIUS BENEDICT TORVALD

RED HAT-  LINUX

IBM –         AIX

SUN-          SOLARIS

SILICON –  IRIX

HP –            HP/

RECOMENDATION for the installation of RED HAT ENTERPRISE LINUX

CPU/PROCESSOR – 1 GHz or ABOVE

RAM – 512 MB minimum

             1 GB recomended

HDD SPACE – 10 GB and ABOVE

LINUX – DVD of LINUX – 5 or 5.4 version

DISPLAY – 800x600 RESOLUTION

KEYBOARD & MOUSE

THERE ARE TWO(2) TYPES OF INTERFACE  IN LINUX

1---- CLI/CUI----COMMAND LINE INTERFACE or CHARACTER USER INTERFACE

2---GUI-----------GRAPHICAL USER INTERFACE

IN MICROSOFT WINDOWS OPERATING SYSTEM  WE HAVE THE ADMINISTRATOR’S DIRECTORY. IN LINUX THE ADMINISTRATOR DIRECTORY IS KNOWN AS THE ROOT DIRECTORY. THE  ROOT IN LINUX IS THE SYSTEM USER. ROOT #    USER $

IN WINDOWS OPERATING SYSTEM WE GET THE ADMINISTRATOR ACCOUNT BY DEFAULT AS SOON AS WE FINISHED INSTALLING THE WINDOWS VERSION AND THEN WE HAVE TO CREATE THE USER ACCOUNTS IF NEEDED. BUT IN LINUX WE DON’T HAVE TO CREATE SUCH USERS THEY ARE ALREADY BEING CREATED AT THE TIME OF INSTALLATION ALONG WITH THE ADMINISTRATOR ACCOUNT. BUT HAVE TO CREATE THE GUEST ACCOUNT UNLIKE MICROSOFT.

THE HARDWARE INFORMATION IS STORED IN THE KERNEL. BASICALLY THERE ARE TWO TYPES OF KERNEL ONE IS MONOLITHIC AND OTHER IS MODULER.
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Switching between virtual consoles and the graphical environment

Virtual Consoles enable users to have multiple logins even when not using the X-window system. They provide full screen, non-graphical access to the system. they can be accessed by typing Ctrl-Alt-F1 through Ctrl-Alt-F6. Users can log in as different users on different virtual consoles, if desired.
Virtual consoles keep a history of the data displayed on the screen. Users can scroll back already aff the screen by typing Shift-PgUp and Shift-PgDn. Be aware that the scroll buffer is stored in video memory, and so the scroll buffer will be lost when you change to another virtual console.
To switch from a virtual console to the graphical console, type Ctrl-Alt-F7.
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 INSTALLATION OF REDHAT LINUX

http://www.youtube.com/watch?v=4LzEVCfRuhw

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