red hat linux 5 system administration pdf

... chapter suggests, Red Hat Linuxmakes greater use of group accounts than other Linux distributions do So,knowing how to add, modify, and delete group accounts is more important onRed Hat systems than ... early Red Hat Linux distributions and carried forward into FedoraCore and RHEL UPGs are intended to make Linux groups easier to use.Although the UPG scheme does not add or change the normal Linux ... /opt/finance/20050420 $ ls -l /opt/finance/20050420 -rw-rw-r 1 bubba finance 0 Apr 20 19:29 /opt/finance/20050420 To summarize, the set-GID bit on directories, combined with the Red HatUPG scheme,

Ngày tải lên: 07/07/2014, 09:20

... Apache required for, 563 checking if installed, 563 connecting to, 563–565 further information, 567 IMAP4 for, 563, 564–565, 566 reconfiguring, 565–567 themes, 566 srm.conffile, 520 SRPMs (source ... CAs, 547, 548, 549, 554 creating a self-signed certificate, 549–551 CSR, 550 encryption, 547 further information, 546 information in certificates, 547–548 obtaining certificates from CAs, 554 overview, ... negotiation, 515 firewall configuration for, 57 kickstart installation from, 76 overview, 517–519 Web services See also specific services mailing lists, 555–563 optimizing, 590–593 RSS feed, 567–573

Ngày tải lên: 07/07/2014, 09:20

... information /etc/sysconfig/selinux This file is a link to /etc/selinux/config and is used to control selinux onthe system It contains two settings that control the state of selinux — enforc-ing, permissive, ... this directory should be edited by hand For more informa-tion on Red Hat Network, see the Red Hat Network Web site at https://rhn.redhat.com Net-Examining the Network Configuration Files This section ... file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead

Ngày tải lên: 07/07/2014, 09:20

... /etc/host.conf so that it uses NIS for hostname lookups Bydefault, the Fedora Core and Red Hat Enterprise Linux host.conf file lookslike the following: order hosts,bind This configuration means that name ... the clientsystem at the mount point /net And here’s the procedure: The server system has already been configured as an NIS and NFS server Likewise, the client system has already been ured as an ... to configure Fedora Core and Red Hat EnterpriseLinux systems as NIS servers and clients You first learned how to set up andtest an NIS server and how to ensure that the NIS server comes up after

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 ... virtual hostsso that it will act as the default server If you fail to add a virtual host for theexisting server, requests that should be answered by the existing Web serverwill be answered by the added ... AddOutputFilter directive tells Apache that files with an shtmlextension should be processed using mod_include, the module that providesApache’s SSI support (the default Red Hat httpd.conf file should containthese

Ngày tải lên: 07/07/2014, 09:20

... Syndication with RSS,” which appeared in the print version of Linux Journal in September 2004 and is also available on the Web at Linux Journal’s Web site at www.linuxjournal .com/article/7670 Another ... Connections closed : 1 Changes of server : 0 HTTP Requests : 5 HTTP KBytes requested : 5.68164 Make the script executable (chmod 755 rundig.cron) and place in /etc /cron.dailyif you want to run ... are a variety of tools thatautomate the creation of RSS feeds, and some content management systemseven include tools to create RSS feeds automatically Other tools exist that youcan use to validate

Ngày tải lên: 07/07/2014, 09:20

... System Chapter 32: Performance Monitoring Trang 4■■ Using the RedHat up2date Agent■■ Registering Your System with the Red Hat Network ■■ Accessing the Red Hat Network with a Web browser The Red ... system. Before you can begin using the Red Hat Network, you must first register yoursystem with Red Hat by using the Red Hat Network registration client N OT E You can also register for the Red ... Network with a Web browser The Red Hat Network up2date agent is a program that is installed by defaultwhen you install Fedora Core or Red Hat Enterprise Linux The Red Hat Net-work up2date software

Ngày tải lên: 07/07/2014, 09:20

... you enable 8250/16550 and compatible serial support It isn’t necessary toenable the Console on 8250/16550 and compatible serial support option unlessyou will be interacting with this system via ... One of the benefits of Linux frame cer-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 port ... ubiquitous Linux has become So far, all USB devicesdiscussed have been attached to a system running Linux The USB GadgetDrivers section is for USB devices that are themselves running Linux Such

Ngày tải lên: 07/07/2014, 09:20

... Fedora Core or RHEL system Trang 15C A U T I O N Updating the system time after the system has booted could cause unpredictable behavior Do not use the -s option except early in the system initialization ... 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

... information about the relationships between themany RPMs that constitute an installed Red Hat system What’s in That RPM? You will often find it useful or necessary to determine the contents of an ... the Red Hat Package Manager RPM is a powerful software configuration manager and the preferred tool forinstalling, removing, verifying, and updating software packages on Fedora Coreand RHEL systems ... one of normal, not installed, or replaced. whatprovides S Queries all RPMs that provide capability. capability whatrequires S Queries all RPMs that need capability in order As you can see

Ngày tải lên: 07/07/2014, 09:20

... system files If the machine is a standard installation of Red HatEnterprise Linux without any customizations or extra packages installed, thesystem files can be restored by reinstalling Red Hat ... version: 3.5.27 Using libscg version ‘schily-0.8’. cdrecord: Warning: using inofficial libscg transport code version (schily - Red Hat-scsi-linux-sg.c-1.83-RH ‘@(#)scsi-linux-sg.c 1.83 04/05/20 Copyright ... amount of backup media that can be saved In theparticular case that a single Red Hat installation is copied verbatim onto manymachines, it may be appropriate to back up the system files of just

Ngày tải lên: 07/07/2014, 09:20

... command: high-$ ps axfj 5048 5216 5048 5048 ? -1 S 500 0:00 \_ /bin/sh /usr/lib/fi 5216 5253 5048 5048 ? -1 S 500 0:00 | \_ /bin/sh /usr/li 5253 5258 5048 5048 ? -1 Sl 500 285:27 | \_ /usr/lib/fi ... like the following: $ free total used free shared buffers cached Mem: 515800 500652 15148 0 0 255356 -/+ buffers/cache: 245296 270504 Trang 4If you want the output to be displayed ... 852 14628 0 250308 0 0 0 30 1132 405 94 6 0 0 3 0 852 14168 0 250444 0 0 0 31 1131 418 93 7 0 0 4 0 852 6780 0 250528 0 0 0 35 1130 375 94 6 0 0 Trang 6What information is shown? In the procs

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 ... read asfollows: SELINUXTYPE=targeted 2 While editing /etc/selinux/config, make certain that theSELINUXvariable is set to permissive, that is: SELINUX=permissiveThis line starts SELinux with the ... policy Using SELinux By default, SELinux as configured on Fedora Core and RHEL systems is uses thetargeted policy and is enabled by default when the system boots If you disabledSELinux during installation,

Ngày tải lên: 07/07/2014, 09:20

... reality, and Red Hat prise Linux is no exception This chapter describes various problems that canoccur with various subsystems and features of Fedora Core and Red HatEnterprise Linux and suggests ... krb5-server— Provides the programs that must be installed on aKerberos 5 server or server replica Implementing Network Security 865 Trang 3■■ krb5-libs— Contains the stared libraries required ... that the problem is related to that specific user’s system.Obviously something changed in the configuration of that user’s system andwe can continue our problem solving there by examining that

Ngày tải lên: 07/07/2014, 09:20

... your system, installing on a laptop, and using the XWindow system with Fedora Core and Red Hat Enterprise Linux Trang 6Solving Boot ProblemsIf you try to shut down or reboot your Red Hat system ... server, make sure that the file /etc/resolv.confhas 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-levelkernel function, so a full reset is needed Starting the X Window System What should

Ngày tải lên: 07/07/2014, 09:20

... Also 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 ... fbetw.qxd 8/30/ 05 6:37 PM Page xvi 01 _59 9496 ffirs.qxd 8/30/ 05 6:38 PM Page ii Red Hat đ Linux đ Networking and System Administration Third Edition 01 _59 9496 ffirs.qxd 8/30/ 05 6:38 PM Page i ... 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 _59 9496...

Ngày tải lên: 07/07/2014, 09:20

... Certification Authority 55 4 Summary 55 4 Chapter 24 Providing Web Services 55 5 Creating Mailing Lists 55 5 Completing the Initial Mailman Configuration 55 6 Creating a Mailing List 55 9 Modifying a Mailing ... 1 06 _59 9496 ch01.qxd 8/30/ 05 6:18 PM Page 4 Part Four System Administration 59 5 Chapter 26 Keeping Your System Updated with up2date and the Red Hat Network 59 7 Using the Red Hat up2date Agent 59 8 Configuring ... Software Packages 7 45 Using the Red Hat Package Manager 7 45 General Options 746 Query Mode 748 Querying Package Dependencies 750 What’s in That RPM? 751 Formatting Query Output 754 Package Installation...

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 ... a box that shows any operating systems, if there are any, that were detected on your system. The Red Hat Linux system will be shown as the default system. If you want to boot another system as...

Ngày tải lên: 07/07/2014, 09:20

... you would want your primary Ethernet interface to be configured on system boot. Standard Installation 55 08 _59 9496 ch03.qxd 8/30/ 05 6:20 PM Page 55 2. Click the radio button in front of Yes to accept ... then lists the Linux partition and any other partitions that may contain another operating system. If your system has a Linux partition and a DOS partition (that actually has Windows 95/ 98 installed ... or deselect that package group. TIP In an actual Red Hat Linux installation, you install exactly those package groups that you need. Each package group requires specific packages to run. The Red Hat installation...

Ngày tải lên: 07/07/2014, 09:20

... version you are using. Figure 5- 5 The Desktop menu in Fedora Core lets you change system preferences. 106 Chapter 5 10 _59 9496 ch 05. qxd 8/30/ 05 7:09 PM Page 106 5. When you have finished configuring ... 85 09 _59 9496 ch04.qxd 8/30/ 05 6:30 PM Page 85 TIP Your Applications menu might not be exactly as described in this section, depending on the type of system (Desktop, Workstation, Server) that ... the system volume, use the utility here. ■■ System Settings — This menu item contains Enterprise Linux system administration utilities and some GNOME configuration utilities as well. ■■ System...

Ngày tải lên: 07/07/2014, 09:20