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Administració De Sistemes GNU Linux Mòdul4 Administració
Administració local Josep Jorba Esteve PID_00238577 GNUFDL • PID_00238577 Administració local Es garanteix el permís per a copiar, distribuir i modificar aquest document segons els termes de la GNU Free Documentation License, Version 1.3 o qualsevol altra de posterior publicada per la Free Software Foundation, sense seccions invariants ni textos de la oberta anterior o posterior. Podeu consultar els termes de la llicència a http://www.gnu.org/licenses/fdl-1.3.html. GNUFDL • PID_00238577 Administració local Índex Introducció.................................................................................................. 5 1. Eines bàsiques per a l'administrador........................................... 7 1.1. Eines gràfiques i línies de comandes .......................................... 8 1.2. Documents d'estàndards ............................................................. 10 1.3. Documentació del sistema en línia ............................................ 13 1.4. Eines de gestió de paquets .......................................................... 15 1.4.1. Paquets TGZ ................................................................... 16 1.4.2. Fedora/Red Hat: paquets RPM ....................................... 19 1.4.3. Debian: paquets DEB ..................................................... 24 1.4.4. Nous formats d'empaquetat: Snap i Flatpak .................. 28 1.5. Eines genèriques d'administració ................................................ 36 1.6. Altres eines ................................................................................. -
Process Text Streams Using Filters
Process Text Streams Using Filters OBJECTIVE: Candidates should should be able to apply filters to text streams. 1 Process Text Streams Using Filters KeyKEY knowledge KNOWLEDGE area(s): AREAS: Send text files and output streams through text utility filters to modify the output using standard UNIX commands found in the GNU textutils package. 2 Process Text Streams Using Filters KEY FILES,TERMS, UTILITIES cat nl tail cut paste tr expand pr unexpand fmt sed uniq head sort wc hexdump split join tac 3 cat cat the editor - used as a rudimentary text editor. cat > short-message we are curious to meet penguins in Prague Crtl+D *Ctrl+D - command is used for ending interactive input. 4 cat cat the reader More commonly used to flush text to stdout. Options: -n number each line of output -b number only non-blank output lines -A show carriage return Example cat /etc/resolv.conf ▶ search mydomain.org nameserver 127.0.0.1 5 tac tac reads back-to-front This command is the same as cat except that the text is read from the last line to the first. tac short-message ▶ penguins in Prague to meet we are curious 6 head or tail using head or tail - often used to analyze logfiles. - by default, output 10 lines of text. List 20 first lines of /var/log/messages: head -n 20 /var/log/messages head -20 /var/log/messages List 20 last lines of /etc/aliases: tail -20 /etc/aliases 7 head or tail The tail utility has an added option that allows one to list the end of a text starting at a given line. -
The Debian GNU/Linux
The Debian GNU/Linux FAQ translator: etony C.F.AN <[email protected]> Debian FAQ Authors version 5.0.1, 17 March 2012 XXX要要要 ,文cãT一些s于 Debian GNU/Linux 的8Á问题. HHHCCC声声声明明明 Copyright © 1996-2003 by Software in the Public Interest (u守v包+,文cHC声明的MÐ下, A¸6\和发布,文c的完t拷贝. (u守上述完t拷贝H,有sHC声明的MÐ下, A¸拷贝和发布ú于,文c完t拷贝的修9H,, v且, 发布@有通Ç修9 ,文c而得0的工\成果, {使(与,文c的¸可声明一致的¸可声明. (u守上述修9H,HC声明的MÐ下, A¸拷贝和发布,文cv它语言的û译H,, 如果,¸可声明有Ïê1o件ú金 会(Free Software Foundation)8Æ的S0化译,, 则uªS0化译,. i Contents 1 定定定II义与与与概概概述述述 1 1.1 什么/ Debian GNU/Linux?...............................................1 1.2 OK, 现(我知SDebian /. Linux/什么?!.......................................1 1.3 什么/ “Hurd”?.......................................................2 1.4 Debian GNU/Linux 与v他 Linux 发LH有什么不同? 为什么要选éDebian GNU/Linux?............2 1.5 Debian ¡划与ê1o件ú金会的GNU¡划 .......................................2 1.6 Debian 的发音Ê+I?...................................................2 2 Debian GNU/Linux 的的的···取取取与与与安安安ÅÅÅ 3 2.1 Debian 的最新H,/?...................................................3 2.2 如U得0 Debian 的安Å盘?................................................3 2.3 如UÎIq安Å Debian?..................................................3 2.4 我有;U:, 可以·取 Debian qÏ吗?..........................................3 2.5 可以o盘安Å吗?.......................................................3 2.6 可以Q络安Å吗?.......................................................4 3 |||¹¹¹'''问问问题题题 5 3.1 可以(什么7的l件û统上ÐL?.............................................5 3.2 与v他的linux发LH|¹L如U?.............................................5 3.3 Debian 源码与v他 -
Chapter 3. Booting Operating Systems
Chapter 3. Booting Operating Systems Abstract: Chapter 3 provides a complete coverage on operating systems booting. It explains the booting principle and the booting sequence of various kinds of bootable devices. These include booting from floppy disk, hard disk, CDROM and USB drives. Instead of writing a customized booter to boot up only MTX, it shows how to develop booter programs to boot up real operating systems, such as Linux, from a variety of bootable devices. In particular, it shows how to boot up generic Linux bzImage kernels with initial ramdisk support. It is shown that the hard disk and CDROM booters developed in this book are comparable to GRUB and isolinux in performance. In addition, it demonstrates the booter programs by sample systems. 3.1. Booting Booting, which is short for bootstrap, refers to the process of loading an operating system image into computer memory and starting up the operating system. As such, it is the first step to run an operating system. Despite its importance and widespread interests among computer users, the subject of booting is rarely discussed in operating system books. Information on booting are usually scattered and, in most cases, incomplete. A systematic treatment of the booting process has been lacking. The purpose of this chapter is to try to fill this void. In this chapter, we shall discuss the booting principle and show how to write booter programs to boot up real operating systems. As one might expect, the booting process is highly machine dependent. To be more specific, we shall only consider the booting process of Intel x86 based PCs. -
How to Create a Custom Live CD for Secure Remote Incident Handling in the Enterprise
How to Create a Custom Live CD for Secure Remote Incident Handling in the Enterprise Abstract This paper will document a process to create a custom Live CD for secure remote incident handling on Windows and Linux systems. The process will include how to configure SSH for remote access to the Live CD even when running behind a NAT device. The combination of customization and secure remote access will make this process valuable to incident handlers working in enterprise environments with limited remote IT support. Bert Hayes, [email protected] How to Create a Custom Live CD for Remote Incident Handling 2 Table of Contents Abstract ...........................................................................................................................................1 1. Introduction ............................................................................................................................5 2. Making Your Own Customized Debian GNU/Linux Based System........................................7 2.1. The Development Environment ......................................................................................7 2.2. Making Your Dream Incident Handling System...............................................................9 2.3. Hardening the Base Install.............................................................................................11 2.3.1. Managing Root Access with Sudo..........................................................................11 2.4. Randomizing the Handler Password at Boot Time ........................................................12 -
Linux Boot Loaders Compared
Linux Boot Loaders Compared L.C. Benschop May 29, 2003 Copyright c 2002, 2003, L.C. Benschop, Eindhoven, The Netherlands. Per- mission is granted to make verbatim copies of this document. This is version 1.1 which has some minor corrections. Contents 1 introduction 2 2 How Boot Loaders Work 3 2.1 What BIOS does for us . 3 2.2 Parts of a boot loader . 6 2.2.1 boot sector program . 6 2.2.2 second stage of boot loader . 7 2.2.3 Boot loader installer . 8 2.3 Loading the operating system . 8 2.3.1 Loading the Linux kernel . 8 2.3.2 Chain loading . 10 2.4 Configuring the boot loader . 10 3 Example Installations 11 3.1 Example root file system and kernel . 11 3.2 Linux Boot Sector . 11 3.3 LILO . 14 3.4 GNU GRUB . 15 3.5 SYSLINUX . 18 3.6 LOADLIN . 19 3.7 Where Can Boot Loaders Live . 21 1 4 RAM Disks 22 4.1 Living without a RAM disk . 22 4.2 RAM disk devices . 23 4.3 Loading a RAM disk at boot time . 24 4.4 The initial RAM disk . 24 5 Making Diskette Images without Diskettes 25 6 Hard Disk Installation 26 7 CD-ROM Installation 29 8 Conclusions 31 1 introduction If you use Linux on a production system, you will only see it a few times a year. If you are a hobbyist who compiles many kernels or who uses many operating systems, you may see it several times per day. -
The Linux Command Line
The Linux Command Line Fifth Internet Edition William Shotts A LinuxCommand.org Book Copyright ©2008-2019, William E. Shotts, Jr. This work is licensed under the Creative Commons Attribution-Noncommercial-No De- rivative Works 3.0 United States License. To view a copy of this license, visit the link above or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042. A version of this book is also available in printed form, published by No Starch Press. Copies may be purchased wherever fine books are sold. No Starch Press also offers elec- tronic formats for popular e-readers. They can be reached at: https://www.nostarch.com. Linux® is the registered trademark of Linus Torvalds. All other trademarks belong to their respective owners. This book is part of the LinuxCommand.org project, a site for Linux education and advo- cacy devoted to helping users of legacy operating systems migrate into the future. You may contact the LinuxCommand.org project at http://linuxcommand.org. Release History Version Date Description 19.01A January 28, 2019 Fifth Internet Edition (Corrected TOC) 19.01 January 17, 2019 Fifth Internet Edition. 17.10 October 19, 2017 Fourth Internet Edition. 16.07 July 28, 2016 Third Internet Edition. 13.07 July 6, 2013 Second Internet Edition. 09.12 December 14, 2009 First Internet Edition. Table of Contents Introduction....................................................................................................xvi Why Use the Command Line?......................................................................................xvi -
Dell EMC Poweredge Systems Running Red Hat Enterprise Linux 7 Release Notes Notes, Cautions, and Warnings
Dell EMC PowerEdge Systems Running Red Hat Enterprise Linux 7 Release Notes Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2014 - 2019 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners. 2019 - 03 Rev. A15 Contents 1 Overview........................................................................................................................................................6 System configuration requirements................................................................................................................................. 6 Memory......................................................................................................................................................................... 6 Installation and upgrade instructions............................................................................................................................... 6 2 Known issues—To be fixed in future releases.................................................................................................7 Unable to create or modify namespace for NVDIMM.................................................................................................. -
Storix Sbadmin User Guide V8.2
SBAdmin User Guide Version 8.2 Trademarks and Copyrights © Copyright Storix, Inc. 1999-2016 USA Storix is a registered trademark of Storix, Inc. in the USA SBAdmin is a trademark of Storix, Inc in the USA and other countries Linux is a registered trademark of Linus Torvalds. Intel, Pentium, IA32, Itanium, Celeron and IA64 are registered trademarks of Intel Corporation. AMD, Opteron, and Athlon are registered trademarks of Advanced Micro Devices. HP Integrity servers are registered trademarks of Hewlett-Packard Development Company IBM, RS6000, AIX, Tivoli, AIX, pSeries, Micro Channel and RS/6000 Scalable POWERParallel Systems are registered trademarks of International Business Machines Corporation. Sun Microsystems and the Solaris™ operating system is a trademark of Sun Microsystems, Inc. SPARC is a trademark of SPARC International, Inc. Xwindows is a trademark of Massachusetts Institute of Technology. Microsoft and Windows are registered trademarks of Microsoft Corporation. Macintosh and Mac OS X are registered trademarks of Apple Computer, Inc. All other company/product names and service marks may be trademarks or registered trademarks of their respective companies. Publicly Available Software This product either includes or is developed using source code that is publicly available: AESCrypt* Rijndael and Cipher Block Feedback Copyright 1999, 2000 Enhanced Software Technologies Inc. mode (CFB-128) encryption/decryption http://aescrypt.sourceforge.net/ algorithms BusyBox Single executable containing tiny Copyright 1989, 1991 Free Software Foundation, Inc. versions of common UNIX utilities http://busybox.net/cgi-bin/cvsweb/busybox/ LILO LInux boot Loader Copyright 1999-2003 John Coffman. Copyright 1992-1998 Werner Almesberger. http://freshmeat.net/projects/lilo/ Tcl Open source scripting language Copyright Regents of the University of California, Sun Microsystems, Inc. -
Network Boot and Exotic Root HOWTO
Network Boot and Exotic Root HOWTO Brieuc Jeunhomme frtest [email protected] Logilab S.A. Revision History Revision 0.3 2002−04−28 Revised by: bej Many feedback inclusions, added links to several projects Revision 0.2.2 2001−12−08 Revised by: dcm Licensed GFDL Revision 0.2.1 2001−05−21 Revised by: logilab Fixed bibliography and artheader Revision 0.2 2001−05−19 Revised by: bej Many improvements and included Ken Yap's feedback. Revision 0.1.1 2001−04−09 Revised by: logilab First public draft. Revision 0.1 2000−12−09 Revised by: bej Initial draft. This document explains how to quickly setup a linux server to provide what diskless linux clients require to get up and running, using an IP network. It includes data and partly rewritten text from the Diskless−HOWTO, the Diskless−root−NFS−HOWTO, the linux kernel documentation, the etherboot project's documentation, the linux terminal server project's homepage, and the author's personal experience, acquired when working for Logilab. Eventually this document may end up deprecating the Diskless−HOWTO and Diskless−root−NFS−HOWTO. Please note that you'll also find useful information in the From−PowerUp−to−bash−prompt−HOWTO and the Thin−Client−HOWTO, and the Claus−Justus Heine's page about NFS swapping. Network Boot and Exotic Root HOWTO Table of Contents 1. Introduction.....................................................................................................................................................1 1.1. What is this all about?.......................................................................................................................1 1.2. Thanks...............................................................................................................................................1 1.3. Diskless booting advocacy................................................................................................................1 1.3.1. Buying is cheaper than building.......................................................................................1 1.3.2. -
Creating Custom Debian Live for USB FD with Encrypted Persistence
Creating Custom Debian Live for USB FD with Encrypted Persistence INTRO Debian is a free operating system (OS) for your computer. An operating system is the set of basic programs and utilities that make your computer run. Debian provides more than a pure OS: it comes with over 43000 packages, precompiled software bundled up in a nice format for easy installation on your machine. PRE-REQ * Debian distro installed * Free Disk Space (Depends on you) Recommended Free Space >20GB * Internet Connection Fast * USB Flash Drive atleast 4GB Installing Required Softwares on your distro: Open Root Terminal or use sudo: $ sudo apt-get install debootstrap syslinux squashfs-tools genisoimage memtest86+ rsync apt-cacher-ng live-build live-config live-boot live-boot-doc live-config-doc live-manual live-tools live-manual-pdf qemu-kvm qemu-utils virtualbox virtualbox-qt virtualbox-dkms p7zip-full gparted mbr dosfstools parted Configuring APT Proxy Server (to save bandwidth) Start apt-cacher-ng service if not running # service apt-cacher-ng start Edit /etc/apt/sources.list with your favorite text editor. Terminal # nano /etc/apt/sources.list Output: (depends on your APT Mirror configuration) deb http://security.debian.org/ jessie/updates main contrib non-free deb http://http.debian.org/debian jessie main contrib non-free deb http://ftp.debian.org/debian jessie main contrib non-free Add “localhost:3142” : deb http://localhost:3142/security.debian.org/ jessie/updates main contrib non-free deb http://localhost:3142/http.debian.org/debian jessie main contrib non-free deb http://localhost:3142/ftp.debian.org/debian jessie main contrib non-free Press Ctrl + X and Y to save changes Terminal # apt-get update # apt-get upgrade NOTE: BUG in Debian Live. -
Linux System Administration
Linux System Administration Jonathan Quick Hartebeesthoek Radio Astronomy Observatory Goals • Help you to understand how Linux starts up, keeps running, and shuts down • Give confidence in dealing with hardware and software failures • Give an overview of what you can configure and how • Show you where to find more information when you need it • For the field system and Mark5’s 2 Basic Linux Concepts • Linux Kernel – Base monolithic kernel + loadable modules – Gives standardized access to underlying hardware • Linux System / "Distribution" – Kernel + lots of software – Adds both system and application level software to the system • Background processes ("daemons") 3 System Modifications • In order to do any system-wide changes you usually have to be logged in as 'root‘ – Or have root privileges • There are a number of approaches for this – Log in as user “root” – Execute “su –” from the present user account – Execute the command directly with “sudo” • E.g. “sudo tail /var/log/kern.log” 4 Logging in as 'root' • You can change to a virtual console (Ctrl-Alt- F1) and login normally or use 'su -' • 'root' can override all permissions, start and stop anything, erase hard drives,... – So please be careful with disk names and similar! – You can browse and check many (if not most of the) things as a normal user (like 'oper'). 5 Sudo • Sudo is a program designed to allow a sysadmin to give limited root privileges to users and log root activity. • The basic philosophy is to give as few privileges as possible but still allow people to get their work