L120: Linux System Administration II



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L120: Linux System
Administration II


course materials

originally released under the GFDL by LinuxIT


modified and released under the GFDL by University of Zagreb University Computing Centre SRCE
(“the publisher”)





Copyright (c) 2005 LinuxIT.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with the Invariant Sections being History, Acknowledgements, with the Front-Cover Texts being “released under the GFDL by LinuxIT”. Copyright (c) 2014 SRCE. Permission is granted to copy, distribute and/or modify this document


under the terms of the GNU Free Documentation License, Version 1.2
or any later version published by the Free Software Foundation;
with the Invariant Sections being History, Acknowledgements, with the Front-Cover Texts being “modified and released under the GFDL by University of Zagreb University Computing Centre SRCE”.

see full GFDL license agreement on p. 137

Introduction

Acknowledgements


The original material was made available by LinuxIT's technical training centre www.linuxit.com. Many thanks to Andrew Meredith for suggesting the idea in the first place. A special thanks to all the students who have helped dilute the technical aspects of Linux administration through their many questions, this has led to the inclusion of more illustrations attempting to introduce concepts in a user friendly way. Finally, many thanks to Paul McEnery for the technical advice and for starting off some of the most difficult chapters such as the ones covering the X server (101), modems (102), security (102) and the Linux kernel (102).
The original manual is available online at http://savannah.nongnu.org/projects/lpi-manuals/.

The modified version of this manual is available online at http://www.srce.unizg.hr/linux-akademija/.


History


First release (version 0.0) October 2003. Reviewed by Adrian Thomasset.

Second release (revision1) January 2003. Reviewed by Andrew Meredith

Release (version 1.1-test) March 2004. Reviewed by Adrian Thomasset.

Reviewed in January-June 2005 by Adrian Thomasset

January 2014. Title: L120: Linux System Administration II (version 1.0). Revised and modified at University of Zagreb University Computing Centre SRCE (“the publisher”) by Darko Culej.

November 2016. Title: L120: Linux System Administration II (version 1.1). Revised and modified at University of Zagreb University Computing Centre SRCE (“the publisher”) by Ivan Rako, Darko Culej and Branimir Radic.


No Guarantee


The manual comes with no guarantee at all.

Resources


www.lpi.org

www.linux-praxis.de

www.lpiforums.com

www.tldp.org

www.fsf.org

www.linuxit.com


Notations


Commands and filenames will appear in the text in bold.
The <> symbols are used to indicate a non optional argument.

The [] symbols are used to indicate an optional argument


Commands that can be typed directly in the shell are highlighted as below


command

or

command



University Computing Centre SRCE



As the major national infrastructural ICT institution in the area of research and higher education in Croatia, the University Computing Centre SRCE is providing a modern, sustainable and reliable e-infrastructure for research and education community.


This includes computing and cloud services, high performance computing, advanced networking, communication systems and services, middleware, data and information systems and infrastructure. At the same time SRCE acts as the computing and information centre of the largest Croatian university – the University of Zagreb, and is responsible for the coordination of the development and usage of e-infrastructure at the University.
Furthermore, by applying cutting edge technologies SRCE continuously enriches academic and reserach e-infrastructure and its own service portfolio. This enables the active participation of Croatia and Croatian scientists in European and global research and higher education area and projects.
Since its founding in 1971 as a part of the University of Zagreb, at that time the only Croatian university, SRCE has provided an extended advisory and educational support to institutions and individuals from the academic and research community in the use of ICT for education and research purposes.
From its beginnings, and still today, SRCE has been recognized as an important factor of the development of modern e-infrastructure at the national level, participating in different projects and providing services like Croatian Intenet eXchange (CIX).
SRCE has a 45 year old tradition of organizing professional courses from the field of ICT.

University Computing Centre SRCE

Josipa Marohnića 5

10000 Zagreb

Croatia
http://www.srce.unizg.hr

e-mail: ured@srce.hr

phone: +385 1 6165 555

Table of Contents


Introduction iii

The Linux Kernel 1

Booting Linux 11

Managing Groups and Users 22

Bash Scripting 31

TCP/IP Networks 40

Network Configuration 48

Network Services 58

Basic Security 78

Linux System Administration 91

Setting up PPP 106

Printing 113

Index 119

Vježba 1. Instalacija nove jezgre 125

Vježba 2. Pokretanje Linuxa 127

Vježba 3. Upravljanje korisnicima i grupama 128

Vježba 4. Skripte u BASH-u 129

Vježba 5. TCP/IP mreže 130

Vježba 6. Konfiguracija mreže 131

Vježba 7. Mrežni servisi: xinetd 133

Vježba 8. Mrežni servisi: DNS poslužitelj 134

Vježba 9. Mrežni servisi: web poslužitelj 136

Vježba 10. Osnove sigurnosti 137

Vježba 11. Osnove administracije poslužitelja 138

Vježba 12. Ispis 139

GNU Free Documentation License 140





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