What is virtual memory?
6.1. What is virtual memory?Linux supports virtual memory, that is, using a disk as an extension of RAM so that the effective size of usable memory grows correspondingly. The kernel will write the contents of a currently unused block of memory to the hard disk so that the memory can be used for another purpose. When the original contents are needed again, they are read back into memory. This is al
4mb Laptop HOWTO
Bruce Richardson <brichardson@lineone.net> 25 March 2000 How to put a "grown-up" Linux on a small-spec (4mb RAM, <=200mb hard disk) laptop. 1. Introduction 1.1 Why this document was written. 1.2 What use is a small laptop? 1.3 Why not just upgrade the laptop? 1.4 What about 4mb desktop machines? 1.5 What this document doesn't do. 1.6 Where to find this document. 1.7 Copyright 2. The Laptops 2.1 Ba
The Linux SCSI programming HOWTO: Inquiry Command Example
Next Previous Contents 9. Inquiry Command Example One of the most basic SCSI commands is the INQUIRY command, used to identify the type and make of the device. Here is the definition from the SCSI-2 specification (for details refer to the SCSI-2 standard). Table 44: INQUIRY Command +=====-========-========-========-========-========-========-========-========+ | Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
Linux BRIDGE-STP-HOWTO
Johann-Heinrich-Abt-Stra�e 7 95213 M�nchberg Germany +49/9251 960877 +49/9251 960878 uwe@bnhof.de
Text-Terminal-HOWTO
David S. Lawyer mailto:dave@lafn.org v1.43 March 2013 This document was originally written for real text terminals which were like monitors (with keyboards), but could only display text with a command line interface (no pictures). They were widely used to access mainframe computers in the late 1970's and 1980's but use of them declined in the 1990's and they are seldom used anymore. However much o
Program Library HOWTO
This HOWTO for programmers discusses how to create and use program libraries on Linux. This includes static libraries, shared libraries, and dynamically loaded libraries. Table of Contents1. Introduction2. Static Libraries3. Shared Libraries3.1. Conventions3.2. How Libraries are Used3.3. Environment Variables3.4. Creating a Shared Library3.5. Installing and Using a Shared Library3.6. Incompatible
Building and Installing Software Packages for Linux: Introduction
Next Previous Contents 1. Introduction Many software packages for the various flavors of UNIX and Linux come as compressed archives of source files. The same package may be "built" to run on different target machines, and this saves the author of the software from having to produce multiple versions. A single distribution of a software package may thus end up running, in various incarnations, on a
The Linux Kernel Module Programming Guide
The Linux Kernel Module Programming GuidePeter Jay Salzman Michael Burian Ori Pomerantz Copyright © 2001 Peter Jay Salzman 2007-05-18 ver 2.6.4 The Linux Kernel Module Programming Guide is a free book; you may reproduce and/or modify it under the terms of the Open Software License, version 1.1. You can obtain a copy of this license at http://opensource.org/licenses/osl.php. This book is distribute
General overview of the Linux file system
3.1.1.1. GeneralA simple description of the UNIX system, also applicable to Linux, is this: "On a UNIX system, everything is a file; if something is not a file, it is a process." This statement is true because there are special files that are more than just files (named pipes and sockets, for instance), but to keep things simple, saying that everything is a file is an acceptable generalization. A
Introduction to Linux
1.27 Edition Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008 Machtelt Garrels 20080606 Table of ContentsIntroduction1. Why this guide?2. Who should read this book?3. New versions and availability4. Revision History5. Contributions6. Feedback7. Copyright information8. What do you need?9. Conventions used in this document10. Organization of this document1. What is Linux?1.1. History1.2. The use
Boot process, Init and shutdown
4.2.1. Introduction One of the most powerful aspects of Linux concerns its open method of starting and stopping the operating system, where it loads specified programs using their particular configurations, permits you to change those configurations to control the boot process, and shuts down in a graceful and organized way. Beyond the question of controlling the boot or shutdown process, the open
PAM (Pluggable Authentication Modules)
3. PAM (Pluggable Authentication Modules) Pluggable authentication modules are at the core of user authentication in any modern linux distribution. 3.1. Why Back in the good old days of linux, if a program, such as su, passwd, login, or xlock, needed to authenticate a user, it would simply read the necessary information from /etc/passwd. If it needed to change the users' password, it would simply
Linux Kernel 2.4 Internals: Virtual Filesystem (VFS)
Next Previous Contents 3. Virtual Filesystem (VFS) 3.1 Inode Caches and Interaction with Dcache In order to support multiple filesystems, Linux contains a special kernel interface level called VFS (Virtual Filesystem Switch). This is similar to the vnode/vfs interface found in SVR4 derivatives (originally it came from BSD and Sun original implementations). Linux inode cache is implemented in a sin
Linux Kernel 2.4 Internals
Tigran Aivazian tigran@veritas.com7 August 2002 (29 Av 6001) Introduction to the Linux 2.4 kernel. The latest copy of this document can be always downloaded from: http://www.moses.uklinux.net/patches/lki.sgml This guide is now part of the Linux Documentation Project and can also be downloaded in various formats from: http://www.linuxdoc.org/guides.html or can be read online (latest version) at: ht
How to tune your system for best Caudium performances
5.3. How to tune your system for best Caudium performances 5.3.1. Linux Until a Linux guru has time to make some nice documentation, here is something that came from PureFtpd software : o Increase your system max descriptors numbers : # echo 60000 > /proc/sys/fs/file-max # echo 180000 > /proc/sys/fs/inode-max # ulimit -n 60000 o mount your filesystems with the "noatime" option o make sure your dis
Text-Terminal-HOWTO
David S. Lawyer mailto:dave@lafn.org v1.43 March 2013 This document was originally written for real text terminals which were like monitors (with keyboards), but could only display text with a command line interface (no pictures). They were widely used to access mainframe computers in the late 1970's and 1980's but use of them declined in the 1990's and they are seldom used anymore. However much o
BASH Programming - Introduction HOW-TO
by Mike G mikkey at dynamo.com.ar Thu Jul 27 09:36:18 ART 2000 This article intends to help you to start programming basic-intermediate shell scripts. It does not intend to be an advanced document (see the title). I am NOT an expert nor guru shell programmer. I decided to write this because I'll learn a lot and it might be useful to other people. Any feedback will be apreciated, specially in the p
The /etc/hosts file
9.7. The /etc/hosts file As your machine gets started, it will need to know the mapping of some hostnames to IP addresses before DNS can be referenced. This mapping is kept in the /etc/hosts file. In the absence of a name server, any network program on your system consults this file to determine the IP address that corresponds to a host name. Following is a sample /etc/hosts file: IPAddress Hostna
Linux Network Administrators Guide
Table of ContentsPreface1. Purpose and Audience for This Book2. Sources of Information3. File System Standards4. Standard Linux Base5. About This Book6. The Official Printed Version7. Overview8. Conventions Used in This Book9. Submitting Changes10. Acknowledgments1. Introduction to Networking1.1. History1.2. TCP/IP Networks1.3. UUCP Networks1.4. Linux Networking1.5. Maintaining Your System2. Issue
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
Options