red hat linux system administration tutorial

... or registered trademarks of Hungry Minds. Red Hat, Red Hat Press, and the Red Hat Press logo are trademarks or registered trademarks of Red Hat, Inc. Linux is a trademark or registered trademark ... ® PRESS Red Hat Linux Networking and System Administration Linux Solutions from the Experts at Red Hat SECURITY TOOLS INCLUDED ON CD-ROM Collings & Wall Your Official Red Hat ® Linux ® Guide ... Hat Linux 27 Red Hat Linux File System 71 Red Hat. .. 31 Starting the Red Hat Linux Installation 32 Partitioning the Hard Disk for Red Hat Linux 36 Naming disks

Ngày tải lên: 12/12/2013, 22:15

... use it APM is a monitoring daemon that works with power management code within the Linux kernel It can alert you to a low battery if you are using Red Hat Linux on a laptop, among other things ... specification Red Hat specifies a separate configuration file for each network interface In a typical Red Hat install, you might have many different network interface config files that all follow ... time Red Hat and other Unix distributions have different runlevels, so there are a different set of programs that are started at each runlevel Examining the System Configuration Files Usually Red

Ngày tải lên: 07/07/2014, 09:20

... for your needs. In addition, the versions of PostgreSQL and MySQL that ship in Fedora Core and Red Hat Enterprise Linux lag somewhat behind the current stable versions of those products. At the ... telecommuting employees) that use a VPN running over (perhaps... another required package, provides the header files and shared libraries required to create C and C++ programs that interact with PostgreSQL ... remotely So, if you’re at home and want to connect to the Linux system on your desk at work, the system at work is the server; the system at home is the VNC client Figure 16-1... pg_dump,

Ngày tải lên: 07/07/2014, 09:20

... modify your system? ??s firewall setup (you are running a firewall, right?). 1. To start the Security Level Configuration tool, select Red Hat ➪ System Settings ➪ Security Level or type system- config-securitylevel ... (Red Hat ➪ System Settings ➪ Date & Time) or type system- config-date at a command prompt Either way, you should see the screen shown in Figure 17-1 If NTP is already running on your system, ... that a startup script, /home/bubba/.vnc /xstartup, has been created and that the script has been executed, that is, the applications it specifies are running on the Xvnc display. This means that

Ngày tải lên: 07/07/2014, 09:20

... of the Linux networking world, and xinetd is an improvement on an important program that has been around for several years It incorporates new features that have been desired by system ... information, not only for NFS but also for all varieties of Linux issues, is the Linux Performance Tuning Web site at http://linuxperf.nl .linux. org/. 422 Chapter 18 24_599496 ch18.qxd 8/30/05 6:47 ... impose overhead on the windowing system to keep the back- ground properly rendered and up to date. Shaped windows and bor- ders are aesthetically pleasing but somewhat expensive in terms of resources.

Ngày tải lên: 07/07/2014, 09:20

... Tool, type system- config-httpd at a command prompt or select Red Hat ➪ System Settings ➪ Server Settings ➪ HTTP Server. However, we do not recommend using HTTP Configuration Tool on your systems ... hosts so that it will act as the default server. If you fail to add a virtual host for the existing server, requests that should be answered by the existing Web server will be answered by the ... AddOutputFilter directive tells Apache that files with an .shtml extension should be processed using mod_include, the module that provides Apache’s SSI support (the default Red Hat httpd.conf file should

Ngày tải lên: 07/07/2014, 09:20

... like additional tutorial information about RSS, see Reuven Lerner’s tutorial on RSS syndication, “At the Forge — Syndication with RSS,” which appeared in the print version of Linux Journal in ... 2004 and is also available on the Web at Linux Journal’s Web site at www.linuxjournal .com/article/7670. Another excellent tutorial is Mark Nottingham’s “RSS Tutorial for Content Publishers and Webmasters,” ... processes ■■ Filesystem tuning — On filesystems that support it, disable updating file access and modification timestamps, which will decrease the number of file operations that have to be performed

Ngày tải lên: 07/07/2014, 09:20

... Using the RedHat up2date Agent ■■ Registering Your System with the Red Hat Network ■■ Accessing the Red Hat Network with a Web browser The Red Hat Network up2date agent is a program that is installed ... the Red. .. on ftp.redhat.com in /pub/redhat /linux/ enterprise/4/en/os/i386/SRPMS The Red Hat Update agent handles all of this for you automatically if you subscribe to the Red Hat ... Enterprise Linux, you should register your system Before you can begin using the Red Hat Network, you must first register your system with Red Hat by using the Red Hat Network

Ngày tải lên: 07/07/2014, 09:20

... One of the benefits of Linux frame buffer support is that it provides that trés chic Linux boot logo displayed on the screen in console (text) mode. More importantly, Linux? ??s frame buffer sup- ... ubiquitous Linux has become. So far, all USB devices discussed have been attached to a system running Linux. The USB Gadget Drivers section is for USB devices that are themselves running Linux. Such ... infinibandta.org/home/. File Systems The File systems configuration section enables you to configure support for the file systems you expect to use or access from your system. One of Linux? ??s greatest strengths

Ngày tải lên: 07/07/2014, 09:20

... THE SHADOW PASSWORD SYSTEM Red Hat Linux, like most, if not all, Linux and UNIX systems, uses shadow passwords because they offer enhanced protection for your system s authentication ... the file system using the file system- specific options fsoptions -r Mounts the file system in read-only mode -s Ignores options specified with -o that are invalid for the given file system type ... mounted file system rw 1 Mounts the file system in read/write mode suid 1 Enables set-UID and set-GID bits on the file system sync 1 Enables synchronous file system I/O on the file system user

Ngày tải lên: 07/07/2014, 09:20

... suggests, Red Hat Linux makes greater use of group accounts than other Linux distributions do. So, knowing how to add, modify, and delete group accounts is more important on Red Hat systems than ... early Red Hat Linux distributions and carried forward into Fedora Core and RHEL. UPGs are intended to make Linux groups easier to use. Although the UPG scheme does not add or change the normal Linux ... and limited exceptions, the root account has unlimited power on any Linux or UNIX system, and, in this respect, Red Hat Linux is no exception The root account, or, to use the expression

Ngày tải lên: 07/07/2014, 09:20

... machine’s system files. If the machine is a standard installation of Red Hat Enterprise Linux without any customizations or extra packages installed, the system files can be restored by reinstalling Red ... backup tools. Red Hat Enterprise Linux provides several packages for dealing with the backup and restoration of the file system. The tar and dump commands pro- vide low-level interfaces to system backups. ... restored by reinstalling Red Hat Linux. The tradeoff is that reinstalling and reconfiguring a system probably takes more time and atten- tion than restoring the file system from backup. However,

Ngày tải lên: 07/07/2014, 09:20

... implementation of ps that is used on Linux systems (from the procps suite) is a classic example of a Linux command gone horribly wrong. It has far too many options, a number of which are redundant. On ... memory allocated as shared memory (System V IPC shared memory, to be precise), additional non- specific buffer memory, and the amount of cached data in memory. The shared memory column should ... decrease Throughput is measured by sectors... processes that are ready to run but that cannot because they are waiting for CPU time You can see in the example output that the run queue is fairly

Ngày tải lên: 07/07/2014, 09:20

... ■ NSA SELinux Information — nsa.gov/selinux NSA SELinux FAQ — nsa.gov/selinux/info/faq.cfm Fedora Project and Red Hat Resources ■ ■ The Fedora Core SELinux FAQ — http://fedora.redhat.com ... Running Apache on SELinux — http://fedora.redhat.com /docs/selinux-apache-fc3 ■ ■ Fedora Core SELinux Mailing List — https://listman.redhat com/mailman/listinfo/fedora-selinux-list 845 846 Chapter ... as follows: SELINUXTYPE=targeted 2. While editing /etc/selinux/config, make certain that the SELINUX variable is set to permissive, that is: SELINUX=permissive This line starts SELinux with the

Ngày tải lên: 07/07/2014, 09:20

... and Red Hat Enterprise Linux is no exception This chapter describes various problems that can occur with various subsystems and features of Fedora Core and Red Hat Enterprise Linux ... having A problem that occurs with your Fedora Core or Red Hat Troubleshooting and Problem Solving Enterprise Linux system has most likely already occurred on another system somewhere... ... This command loads the necessary modules that Red Hat Linux needs in order to provide support for DOS/Windows file systems... Problems Solving File System Problems Solving Networking Problems

Ngày tải lên: 07/07/2014, 09:20

... server, make sure that the file /etc/resolv.conf has the correct values for your system? ??s DNS server(s). Make sure that the val- ues are correct. If you are using Red Hat Linux on a system attached ... of the few Red Hat Linux services that requires a system restart to make it take effect; APM is a low-level kernel function, so a full reset is needed. Starting the X Window System What should ... the latest version of XFree86 from redhat.com/support/errata. Upgrading X is fairly simple, but an upgrade HOWTO is available at the Red Hat Web site at redhat.com/support/docs/howto/XFree86-upgrade

Ngày tải lên: 07/07/2014, 09:20

... Defined CHAPTER 1 Duties of the System Administrator CHAPTER 2 Planning the Network CHAPTER 3 Installing Red Hat Linux CHAPTER 4 Red Hat Linux File System CHAPTER 5 Red Hat System Configuration Files Part I b3632-X ... part introduces the system administrator’s duties. The chapters in this part discuss planning a network, installing Red Hat Linux, and working with the Red Hat Linux file system and configuration ... operating systems. Now, Red Hat has employed innovations that extend these duties even for the experienced Linux user. In this chapter, we look at those requirements. The Linux System Administrator Linux...

Ngày tải lên: 12/12/2013, 22:15

... covered is the Red Hat Network, a subscription service available with Red Hat Enterprise Linux that you can use to keep your system current. You can register your systems with Red Hat and then ... mainframes. Linux in general, Fedora Core 4 and Red Hat Enterprise Linux in particular, are very powerful operating systems that can be used at the enterprise level as a full-fledged server. Linux ... We want to emphasize that this book is useful for users of Fedora Core, the open source community–based Linux project supported by Red Hat, as well as users of Red Hat Enterprise Linux. Preface ix 02_599496...

Ngày tải lên: 07/07/2014, 09:20

... subscribe to the Red Hat Linux security mailing list? (Find it at www.redhat.com/mailing-lists /linux- security/index.html.) Have you established a procedure that makes sure that every security ... ch01.qxd 8/30/05 6:18 PM Page 4 Part Four System Administration 595 Chapter 26 Keeping Your System Updated with up2date and the Red Hat Network 597 Using the Red Hat up2date Agent 598 Configuring the ... whatever came on the com- puter, assuming that things came properly configured from the factory. The user or enterprise that decides on Linux has decided, also, to assume the con- trol that Linux...

Ngày tải lên: 07/07/2014, 09:20

... Red Hat boot disk starts your PC and the Red Hat Linux installation program. After you install Red Hat Linux, you no longer need the Red Hat boot disk (except when you want to reinstall Red Hat ... installation section. Creating the Red Hat Boot Disk To boot Red Hat Linux for the first time and start the Red Hat Linux installa- tion program, you need a Red Hat boot disk. For this step, you ... reinstall Red Hat Linux from the CD-ROMs). The Red Hat boot disk contains an initial version of the Red Hat Linux installation program that you use to start Red Hat Enterprise Linux, prepare the...

Ngày tải lên: 07/07/2014, 09:20