red hat linux 6 system administration guide

... sample page. Figure 24-7 Changing the IMAP server SquirrelMail uses. 566 Chapter 24 31_5994 96 ch24.qxd 8/30/05 7:30 PM Page 566 Figure 24-8 Testing SquirrelMail configuration changes. SquirrelMail’s ... 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/ 767 0. Another excellent ... called Sage (see Figure 24-10). 568 Chapter 24 31_5994 96 ch24.qxd 8/30/05 7:30 PM Page 568 Figure 24-10 Using the Sage RSS aggregator in Firefox. Providing Web Services 569 SORTING OUT RSS VERSIONS

Ngày tải lên: 07/07/2014, 09:20

... the Red. .. on ftp.redhat.com in /pub/redhat /linux/ enterprise/4/en/os/i3 86/ SRPMS The Red Hat Update agent handles all of this for you automatically if you subscribe to the Red Hat ... Keeping Your System Updated with up2date and the Red Hat Network 60 1 34_5994 96 ch 26. qxd 8/30/05 7:19 PM Page 60 1 Figure 26- 4 The Package Exceptions tab. Updating Your System Whenever your system needs ... 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

... or functions that take the most time across the whole system. Upgrading and Customizing the Kernel 66 3 35_5994 96 ch27.qxd 8/30/05 7:35 PM Page 66 3 [...]... available Red Hat systems installed ... Customizing the Kernel 66 1 35_5994 96 ch27.qxd 8/30/05 7:35 PM Page 66 1 Pseudo-File-Systems Pseudo-file-systems are so named because they are not true file systems with a distinct file system structure ... described in the next section. You should also enable the 65 6 Chapter 27 35_5994 96 ch27.qxd 8/30/05 7:35 PM Page 65 6 USB device file system option so that you can view the USB device tree in /proc/bus/usb/xxx/yyy

Ngày tải lên: 07/07/2014, 09:20

... Table 28-7. 68 8 Chapter 28 36_ 5994 96 ch28.qxd 8/30/05 7:24 PM Page 68 8 NOTE Because Linux supports so many file systems, this chapter discusses only a few of the many file systems and file system ... files on the file system exec 1 Enables execution of binaries on the file system (continued) Configuring the System at the Command Line 68 9 36_ 5994 96 ch28.qxd 8/30/05 7:24 PM Page 68 9 Table 28-7 ... 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

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

... Wrote:/usr/src/redhat/RPMS/i3 86/ util -linux- debuginfo-2.12a- 16. i3 86. rpm They indicate that RPM created two binary RPMs, util -linux- 2.12a 16. i3 86. rpm and util -linux- debuginfo-2.12a- 16. i3 86. rpm, in ... 022 + cd /usr/src/redhat/BUILD + LANG=C + export LANG + unset DISPLAY + cd /usr/src/redhat/BUILD + rm -rf util -linux- 2.12a + /usr/bin/gzip -dc /usr/src/redhat/SOURCES/util -linux- 2.12a.tar.gz... ... bubba +- 2 168 2000 2025 13days 29 0 0 Summary This chapter briefly recapped the power of the root account on a Red Hat Enterprise Linux system and showed you how to delegate some of that power

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

... sort -k6 ,6 -nr < /proc/slabinfo | cut -f1 -d: size-131072(DMA) 0 0 131072 1 32 size-131072 0 0 131072 1 32 size -65 5 36( DMA) 0 0 65 5 36 1 16 size -65 5 36 4 4 65 5 36 1 16 size-32 768 (DMA) 0 0 32 768 1 ... anon_vma 3 069 3213 32 119 1 arp_cache 2 20 192 20 1 as_arq 0 0 64 61 1 avc_node 12 60 0 52 75 1 bdev_cache 14 18 60 8 6 1 bio 287 287 96 41 1 biovec-1 293 452 16 2 26 1 biovec- 16 260 260 192 20 1 ... 65 5 36 1 16 size-32 768 (DMA) 0 0 32 768 1 8 size-32 768 49 49 32 768 1 8 size- 163 84(DMA) 0 0 163 84 1 4 size- 163 84 3 3 163 84 1 4 tcpv6_sock 1 5 13 76 5 2 task_struct 120 120 1392 5 2 The sixth column

Ngày tải lên: 07/07/2014, 09:20

... have to allow TCP and UDP access to port 66 6 7, so you would enter 66 67:tcp 66 67:udp in the Other ports text box (See Figure 34-3.) T I P To find out what ports and protocols a given network ... 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 8 46 Chapter 33 ... ■ 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

Ngày tải lên: 07/07/2014, 09:20

... on. On systems that use Kerberos, you should put the /usr/bin/kerberos directory in the 866 Chapter 34 43_5994 96 ch34.qxd 8/30/05 7: 26 PM Page 866 default PATH for users before standard system ... 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...

Ngày tải lên: 07/07/2014, 09:20

... XFree 86 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/XFree 86- upgrade /XFree 86- upgrade.html. ... 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 ... 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

Ngày tải lên: 07/07/2014, 09:20

... box, 60 6? ?60 7 Up2date Login Page, 60 6 Web site, 60 5, 60 8? ?61 4 Red Hat Network Configuration dialog box, 599? ?60 2 Red Hat Package Manager See RPM Red Hat Web site, 60 8 Red Hat/ ... information, 568 Red Hat Network site, 60 5, 60 8? ?61 4 Red Hat site, 60 8 Red Hat/ Fedora Repository site, 768 RFC information, 2 46 RPM PBone Search site, 768 rpmfind.net site, 769 rpm.livna.org site, 769 RPMs, ... kernel source, 62 0? ?62 8 overview, 61 5 passing parameters in GRUB, 130–131 patches, 61 6, 62 3, 62 7? ?62 8 preparing to upgrade, 61 8? ?61 9 pristine RPM for, 62 3? ?62 8 Red Hat- blessed, support and, 61 7 selection

Ngày tải lên: 07/07/2014, 09:20

... SquirrelMail 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.conf file, 520 ... mkswap, 68 3, 68 6? ?68 7 defined, 31 disabling, 68 3, 69 1 enabling, 68 3, 69 0? ?69 1 monitoring activity with sar, 827 overview, 47 paging, 47 swapoff command, 68 3, 69 1 swapon command, 68 3, 69 0? ?69 1 switches ... 599, 60 0? ?60 1, 60 6 installed by default, 597 kernel upgrade and, 61 6, 61 9, 62 0 Package List dialog box, 60 4 Package Retrieval dialog box, 60 4? ?60 5 Red Hat Network Configuration dialog box, 599? ?60 2

Ngày tải lên: 07/07/2014, 09:20

... 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/ 767 0 Another excellent ... handles your system? ??s outbound email In this case, Postfix will simply hand off locally generated email to the relay host, which must be configured to relay for you For a system that sits on an ... IMAP The mail system configurations discussed so far assumed that all systems on your network run some sort of MTA Obviously, this is an unwarranted assumption For example, Windows systems used

Ngày tải lên: 14/08/2014, 12:20

... 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 ... 262 Configuring IP Masquerading 263 Summary 263 Chapter 12 The Network File System 265 NFS Overview 265 Understanding NFS 266 What’s New with NFSv4? 268 NFS Advantages and Disadvantages 269 Planning an NFS ... fbetw.qxd 8/30/05 6: 37 PM Page xvi 01_5994 96 ffirs.qxd 8/30/05 6: 38 PM Page ii Red Hat đ Linux đ Networking and System Administration Third Edition 01_5994 96 ffirs.qxd 8/30/05 6: 38 PM Page i ...

Ngày tải lên: 07/07/2014, 09:20

... Chapter 1 06_ 5994 96 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 ... Drivers 64 5 Generic Driver Options 64 5 Memory Technology Devices 64 5 Parallel Port Support 64 5 Plug and Play Support 64 6 Block Devices 64 6 ATA/ATAPI/MFM/RLL Support 64 7 SCSI Device Support 64 8 Old ... Agent 599 Updating Your System 60 2 Registering Your System 60 5 Accessing the Red Hat Network with a Web Browser 60 8 Summary 61 4 Chapter 27 Upgrading and Customizing the Kernel 61 5 Determining Whether...

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

... change the system time on this screen. Standard Installation 67 08_5994 96 ch03.qxd 8/30/05 6: 20 PM Page 67 71 As a system administrator, one of your jobs is installing and configuring Red Hat on ... newly installed system will boot to the GNOME desktop. Figure 3-23 You add a system user on the System User screen. Standard Installation 69 08_5994 96 ch03.qxd 8/30/05 6: 20 PM Page 69 ■■ Mail Server ... Agreement screen. 66 Chapter 3 08_5994 96 ch03.qxd 8/30/05 6: 20 PM Page 66 Running Firstboot After the installation process completes, you are prompted to remove all disks and to reboot your system. A...

Ngày tải lên: 07/07/2014, 09:20

... 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 ... box in front of a listed ser- vice, requests for that service are accepted by your system. 86 Chapter 4 09_5994 96 ch04.qxd 8/30/05 6: 30 PM Page 86 The default selection here is to have the installation ... Installation 93 09_5994 96 ch04.qxd 8/30/05 6: 30 PM Page 93 CROSS-REFERENCE Refer to Chapter 26 for more information about the system status icon and how to update your system. At the far right...

Ngày tải lên: 07/07/2014, 09:20

... typical Fedora and Red Hat Enterprise Linux system. 142 Chapter 7 12_5994 96 ch07.qxd 8/30/05 6: 45 PM Page 142 141 The File System Explained IN THIS CHAPTER ■■ Understanding the File System Structure ■■ ... at the file system structure are the file system commands, essential to proper file system management. In addition to the native Linux file system, Fedora Core and Red Hat Enterprise Linux support ... second stage program that will begin the process of loading the operating system into system memory. GRUB uses a configuration file 128 Chapter 6 11_5994 96 ch 06. qxd 8/30/05 6: 21 PM Page 128 Figure...

Ngày tải lên: 07/07/2014, 09:20