Linux Basic Administration Concepts

Introduction

Linux is a multi-user system, allowing many users on the same machine at once. Due to security considerations, normal users are limited to manipulating only their personal files. Sometimes, however, it is needed to administer the system, to install software or perform maintenence tasks. To perform these tasks, a linux system has a special user account called root.

Using the root account could be very dangerous. One short command might wipe out your entire hard drive without warning. Therefore, you must observe extreme caution while working as root, avoiding root as much as possible.

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