Beginners tutorial on the Unix operating system.

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Beginners tutorial on the Unix operating system.

Step by step guide to the commands used in Unix.
http://www.learningsteps.com/unix_tutorial.php
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  • Total Votes: 144 votes

  • Category: Linux/Basic Concepts

  • Submitted on: 2008-04-25 12:42:11

  • Submitted By: Devesh Khanna

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Description:

UNIX is a multi-user, multi-tasking operating system, thus UNIX supports multiple users, each running mutiple processes simultaneously.

UNIX operating system is made up of 3 parts; (1) Kernel (2) Shell (3) Files and Processes.

(1) Kernel:The kernel of UNIX is the center of the operating system. It allocated time and memory to programs. The Kernel allows system calls request different services such as file open File: open close, read, write, link, or execute a file;

(2) Shell:The shell acts as an interface between the user and the kernel. When a user logs in, the login program checks the username and password, and then starts another program called the shell. The shell is a command line interpreter (CLI). It interprets the commands the user types in and arranges for them to be carried out

(3) Files and Processes: Everything in UNIX is either a file or a process. A process is an executing program identified by a unique PID .    More detail...

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