Practical Guide to Red Hat(R) Linux(R) : A Fedora(TM) Core and Red Hat Enterprise Linux

by Sobell, Mark G.

• ISBN13: 9780131470248
• ISBN10: 0131470248
• Edition: 2nd
• Format: Paperback w/CD
• Copyright: 2005-01-01
• Publisher: Prentice Hall

Summary

The best just became BETTER! Completely revised to meet all your Red Hat Linux needs!Fedora Core and Red Hat Enterprise Linux are advanced operating systems. You need a book that's just as advanced. This book explains Linux clearly and effectively--with a focus on the features you care about, including system security, Internet server setup, and sharing files and printers with Windows systems. Best-selling Linux AUTHOR Mark Sobell starts at the beginning and walks you through everything that matters, from installing Fedora Core using the included CDs to GNOME, KDE, Samba 3, sENDmail , Apache, DNS, NIS, and iptables . Along the way, you learn the "hows" and the "whys." Whether you are a user, an administrator, or a programmer, this book gives you all you need and more. Mark Sobell knows every Linux nook and cranny, has taught hundreds of thousands of readers, and never forgets what it's like to be new to Linux. Don't settle for yesterday's Linux book...get the ONLY book that meets today's challenges and tomorrow's! Compared with the other Linux books out there, A Practical Guide to Red Hatreg; Linuxreg;, Second EDITION, delivers... bull; bull;The full Fedora Core operating system on 4 CDs (not the truncated "PUBLISHER's EDITION") AND complete coverage of Fedora Core and the 2.6 Linux kernel, PLUS coverage of Red Hat Enterprise Linux bull;Deeper coverage of GNOME and KDE, including customization bull;More practical coverage of file sharing with Samba, NFS, and FTP bull;Easier-to-follow coverage of Internet server configuration including Apache, sENDmail , NFS, and DNS bull;More up-to-date coverage of security, including SELinux (Security Enhanced Linux), OpenSSH, and firewall setup using iptables bull;Better coverage of "meat-and-potatoes" system/network administration tasks bull;A more practical introduction to writing bash shell scripts bull;More complete coverage of configuring local and network printers using CUPS bull;And much more...including a 500+ word glossary and a comprehensive index to help you find what you need fast! Includes 4 CDs! Get the full version of Red Hat's Fedora Core 2 release!

Author Biography

Mark G. Sobell is president of Sobell Associates Inc.

Table of Contents

Preface	xxxi
1 Welcome to Linux	1	(20)
The GNU-Linux Connection	1	(4)
The Code Is Free	4	(1)
Have Fun!	4	(1)
The Linux 2.6 Kernel	5	(1)
The Heritage of Linux: UNIX	5	(1)
What Is So Good About Linux?	6	(3)
Why Linux Is Popular with Hardware Companies and Developers	7	(1)
Linux Is Portable	7	(1)
Standards	8	(1)
The C Programming Language	8	(1)
Overview of Linux	9	(5)
Linux Has a Kernel Programming Interface	9	(1)
Linux Can Support Many Users	10	(1)
Linux Can Run Many Tasks	10	(1)
Linux Provides a Secure Hierarchical Filesystem	11	(1)
The Shell: Command Interpreter and Programming Language	12	(1)
A Large Collection of Useful Utilities	13	(1)
Interprocess Communication	14	(1)
System Administration	14	(1)
Additional Features of Linux	14	(2)
GUI: Graphical User Interfaces	14	(2)
(Inter)networking Utilities	16	(1)
Software Development	16	(1)
Conventions Used in This Book	16	(4)
Chapter Summary	20	(1)
Exercises	20	(1)
PART I Installing Red Hat Linux	21	(52)
2 Installation Overview	23	(20)
More Information	24	(1)
Planning the Installation	24	(8)
Considerations	24	(1)
Installation Requirements	25	(1)
What Are You Installing: Fedora Core or Red Hat Enterprise Linux?	26	(1)
Installing a Fresh Copy or Upgrading an Existing Red Hat System?	26	(1)
Types of Installations (FEDORA)	27	(1)
Graphical or Textual Installation?	27	(1)
Setting Up the Hard Disk	27	(4)
RAID	31	(1)
LVM (Logical Volume Manager)	32	(1)
How the Installation Works	32	(2)
The Medium: Where Is the Source Data?	34	(1)
Formats	34	(1)
Sources	34	(1)
Downloading, Burning, and Installing a CD Set ( FEDORA)	35	(4)
Finding a Site to Download From	36	(1)
Finding the Right Files and Downloading Them	36	(2)
Using BitTorrent to Download the ISO Image Files	38	(1)
Checking the Files	38	(1)
Burning the CDs	39	(1)
Rescue CD	39	(1)
Collecting Information About the System	40	(1)
Chapter Summary	41	(1)
Exercises	42	(1)
Advanced Exercises	42	(1)
3 Step-by-Step Installation	43	(30)
Installing Red Hat Linux	43	(10)
Booting the System: The boot: Prompt	44	(1)
Boot Commands	44	(2)
The Anaconda Installer	46	(6)
When You Reboot	52	(1)
Initializing Databases	52	(1)
Installation Tasks	53	(9)
Using Disk Druid to Partition the Disk	53	(4)
Using the Kickstart Configurator	57	(1)
fdisk: Reports On and Partitions a Hard Disk	58	(3)
Setting Up a Dual-Boot System	61	(1)
The X Window System	62	(9)
system-config-display: Configuring the Display	63	(2)
The xorg.conf and XF86Config Files	65	(5)
gdm: Displays a Graphical Login	70	(1)
More Information	71	(1)
Chapter Summary	71	(1)
Exercises	72	(1)
Advanced Exercises	72	(1)
PART II Getting Started with Red Hat Linux	73	(142)
4 Introduction to Red Hat Linux	75	(42)
Curbing Your Power: Superuser/root/Administrator Access	75	(1)
A Tour of the Red Hat Linux Desktop	76	(18)
Logging In on the System	76	(2)
Getting the Most from the Desktop	78	(9)
Using Konqueror to Manage Files, Run Programs, and Browse the Web	87	(3)
Customizing Your Desktop with the Control Center	90	(2)
Customizing the Main Panel Using the Panel Menu	92	(2)
Getting the Facts: Where to Find Documentation	94	(7)
The KDE Help Center	94	(1)
man: Displaying the System Manual	94	(3)
info: Displaying Information About Utilities	97	(1)
HOWTOs: Finding Out How Things Work	98	(1)
Getting Help with Your System	99	(2)
More About Logging In	101	(9)
The Login Screen	102	(1)
What to Do If You Cannot Log In	103	(1)
Logging Out	103	(1)
Using Virtual Consoles	103	(1)
Logging In Remotely: Terminal Emulation and telnet	104	(1)
Changing Your Password	104	(2)
switchdesk: Changing Your Default Desktop	106	(1)
Logging In from a Terminal	106	(4)
Controlling Windows II	110	(3)
Changing the Input Focus	110	(1)
Changing the Resolution of the Display	111	(1)
Understanding the Window Manager	111	(2)
Session Management	113	(1)
Chapter Summary	113	(1)
Exercises	114	(1)
Advanced Exercises	115	(2)
5 The Linux Utilities	117	(40)
Special Characters	118	(1)
Basic Utilities	118	(3)
Is: Lists the Names of Files	119	(1)
cat: Displays a Text File	119	(1)
rm: Deletes a File	120	(1)
less Is more: Displaying a Text File One Screen at a Time	120	(1)
hostname: Displays Your Machine Name	120	(1)
Working with Files	121	(6)
cp: Copies a File	121	(1)
mv: Changes the Name of a File	122	(1)
Ipr: Prints a File	122	(1)
grep: Finds a String	123	(1)
head: Displays the Beginning of a File	124	(1)
tail: Displays the End of a File	125	(1)
sort: Displays a File in Order	125	(1)
uniq: Removes Duplicate Lines from a File	126	(1)
diff: Compares Two Files	126	(1)
file: Tests the Contents of a File	127	(1)
I (Pipe): Communicates Between Processes	127	(1)
Four More Utilities	128	(3)
echo: Displays Text	128	(1)
date: Displays the Time and Date	128	(1)
script: Records a Linux Session	129	(1)
mcopy: Converts Linux Files to Windows Format	130	(1)
Compressing and Archiving a File	131	(4)
gzip: Compresses a File	131	(1)
gunzip and zcat: Decompress a File	132	(1)
bzip2: Compresses/Decompresses a File	133	(1)
tar: Packs and Unpacks Files	133	(2)
Locating Commands	135	(2)
which, whereis: Locate a Utility	135	(2)
apropos: Searches for a Keyword	137	(1)
Obtaining User and System Information	137	(4)
who: Lists Users on the System	138	(1)
finger: Lists Users on the System	138	(2)
w: Lists Users on the System	140	(1)
Communicating with Other Users	141	(3)
write: Sends a Message	141	(1)
talk: Communicates with Another User	142	(2)
mesg: Denies or Accepts Messages	144	(1)
Email	144	(1)
Tutorial: Creating and Editing a File with vim (vi)	145	(7)
Specifying a Terminal	145	(1)
Starting vim	145	(2)
Command and Input Modes	147	(1)
Entering Text	148	(1)
Getting Help	149	(2)
Ending the Editing Session	151	(1)
Chapter Summary	152	(2)
Exercises	154	(1)
Advanced Exercises	155	(2)
6 The Linux Filesystem	157	(32)
The Hierarchical Filesystem	157	(1)
Directory and Ordinary Files	158	(12)
Filenames	159	(3)
mkdir: Creates a Directory	162	(1)
The Working Directory	163	(1)
Home Directory	164	(1)
Absolute Pathnames	165	(1)
Relative Pathnames	166	(1)
Important Standard Directories and Files	167	(3)
Working with Directories	170	(3)
rmdir: Deletes a Directory	170	(1)
Pathnames	170	(1)
mv, cp: Moves or Copies a File	171	(1)
mv: Moves a Directory	172	(1)
Access Permissions	173	(4)
ls -1: Displays Permissions	173	(1)
chmod: Changes Access Permissions	174	(1)
Setuid and Setgid Permissions	175	(1)
Directory Access Permissions	176	(1)
Links	177	(6)
Hard Links	178	(2)
Symbolic Link	180	(2)
rm: Removes a Link	182	(1)
Chapter Summary	183	(1)
Exercises	184	(2)
Advanced Exercises	186	(3)
7 The Shell I	189	(26)
The Command Line	189	(5)
Syntax	190	(2)
Processing the Command Line	192	(1)
Executing the Command Line	193	(1)
Standard Input and Standard Output	194	(2)
The Screen as a File	195	(1)
The Screen/Keyboard as Standard Input and Standard Output	195	(1)
Redirection	196	(5)
Redirecting Standard Output	197	(1)
Redirecting Standard Input	198	(2)
Appending Standard Output to a File	200	(1)
/dev/null: Data Sink	201	(1)
Pipes	201	(3)
Filters	204	(1)
tee: Sends Output in Two Directions	204	(1)
Running a Program in the Background	204	(3)
Filename Generation/Pathname Expansion	207	(4)
The ? Special Character	207	(1)
The Special Character	208	(1)
The [ ] Special Characters	209	(2)
Builtins	211	(1)
Chapter Summary	211	(1)
Exercises	212	(2)
Advanced Exercises	214	(1)
PART III Digging Into Red Hat Linux	215	(152)
8 Linux GUIs: X, GNOME, and KDE	217	(34)
X Window System	217	(9)
Using X	220	(3)
Window Managers	223	(3)
Using GNOME	226	(11)
Using the Nautilus File Manager	226	(6)
GNOME Utilities	232	(5)
Using KDE	237	(10)
Konqueror Browser/File Manager	237	(7)
KDE Utilities	244	(3)
Chapter Summary	247	(1)
Exercises	248	(1)
Advanced Exercises	248	(3)
9 The Shell II: The Bourne Again Shell	251	(72)
Background	252	(1)
Shell Basics	253	(3)
Assignment Statements	253	(1)
Writing a Simple Shell Script	254	(2)
Separating and Grouping Commands	256	(4)
; and NEWLINE Separate Commands	256	(1)
\ Continues a Command	256	(1)
| and & Separate Commands and Do Something Else	257	(1)
Multitasking Demonstration	258	(1)
( ) Groups Commands	259	(1)
Redirecting Standard Error	260	(2)
noclobber: Avoids Overwriting Files	262	(1)
Job Control	262	(3)
jobs: Lists Jobs	263	(1)
fg: Brings a Job to the Foreground	263	(1)
bg: Sends a Job to the Background	264	(1)
Manipulating the Directory Stack	265	(2)
dirs: Displays the Stack	265	(1)
pushd: Pushes a Directory on the Stack	266	(1)
popd: Pops a Directory Off the Stack	267	(1)
Processes	267	(6)
Process Structure	268	(1)
Process Identification	268	(2)
Executing a Command	270	(1)
Running a Shell Script	270	(3)
Parameters and Variables	273	(20)
User-Created Variables	275	(7)
Keyword Variables	282	(5)
Positional Parameters	287	(4)
Special Parameters	291	(2)
History	293	(2)
Editing the Command Line	295	(10)
fc: Displays, Edits, and Reexecutes Commands	295	(3)
Reexecuting an Event with the C Shell History Mechanism	298	(3)
The Readline Library	301	(4)
Alias	305	(3)
Quotation Marks: Single versus Double	305	(1)
Examples	306	(2)
Command Line Expansion	308	(9)
Order of Expansion	309	(1)
{} Brace Expansion	309	(2)
~Tilde Expansion	311	(1)
$n Parameter Expansion	311	(1)
$VARIABLE Variable Expansion	312	(1)
$(...) Command Substitution	312	(1)
Arithmetic Expansion	313	(1)
Word Splitting	314	(1)
Pathname Expansion	315	(2)
Chapter Summary	317	(3)
Exercises	320	(2)
Advanced Exercises	322	(1)
10 Networking and the Internet	323	(44)
Types of Networks and How They Work	325	(16)
Broadcast	326	(1)
Point-to-Point	326	(1)
Switched	326	(1)
LAN: Local Area Network	327	(1)
WAN: Wide Area Network	328	(1)
Internetworking Through Gateways and Routers	328	(3)
Network Protocols	331	(3)
Host Address	334	(3)
CIDR: Classless Inter-Domain Routing	337	(2)
Hostnames	339	(2)
Communicate over a Network	341	(2)
finger: Displays Information About Remote Users	341	(1)
Sending Mail to a Remote User	342	(1)
Mailing List Servers	343	(1)
Network Utilities	343	(7)
Trusted Hosts	343	(1)
OpenSSH Tools	344	(1)
telnet: Logs in on a Remote System	344	(2)
ftp: Transfers Files over a Network	346	(1)
ping: Tests a Network Connection	346	(1)
traceroute: Traces a Route over the Internet	347	(1)
host and dig: Queries Internet Nameservers	348	(1)
whois: Looks Up Information About an Internet Site	348	(2)
Distributed Computing	350	(9)
The Client/Server Model	351	(1)
DNS: Domain Name Service	352	(2)
NIS: Network Information Service	354	(1)
NFS: Network Filesystem	354	(1)
Internet Services	354	(3)
Proxy Server	357	(1)
RPC Network Services	358	(1)
Usenet	359	(3)
WWW: World Wide Web	362	(2)
URL: Uniform Resource Locator	363	(1)
Browsers	363	(1)
Search Engine	364	(1)
Chapter Summary	364	(1)
Exercises	365	(1)
Advanced Exercises	366	(1)
PART IV System Administration	367	(194)
11 System Administration: Core Concepts	369	(56)
System Administrator and Superuser	371	(6)
System Administration Tools	373	(4)
Rescue Mode	377	(2)
Avoiding a Trojan Horse	378	(1)
Getting Help	379	(1)
SELinux ( FEDORA)	379	(1)
System Operation	380	(13)
Booting the System	381	(1)
Init Scripts: Start and Stop System Services	381	(5)
Emergency Mode	386	(1)
Single-User Mode	387	(1)
Going Multiuser	387	(1)
Multiuser/Graphics Mode	388	(1)
Logging In	388	(2)
Running a Program and Logging Out	390	(1)
Bringing the System Down	390	(2)
Crash	392	(1)
Useful Utilities	393	(6)
Red Hat Configuration Tools	393	(3)
Linux Utilities	396	(3)
Setting Up a Server	399	(14)
Standard Rules in Configuration Files	399	(2)
rpcinfo: Displays Information About portmap	401	(2)
The xinetd Super Server	403	(1)
Securing a Server	404	(4)
DHCP	408	(5)
nsswitch.conf: Which Service to Look at First	413	(3)
How nsswitch.conf Works	413	(3)
PAM	416	(6)
More Information	417	(1)
Configuration File, Module Type, and Control Flag	417	(2)
Example	419	(2)
Modifying the PAM Configuration	421	(1)
Chapter Summary	422	(1)
Exercises	423	(1)
Advanced Exercises	423	(2)
12 Files, Directories, and Filesystems	425	(28)
Important Files and Directories	425	(11)
File Types	436	(4)
Ordinary Files, Directories, Links, and Inodes	436	(1)
Special Files	437	(3)
Filesystems	440	(10)
mount: Mounts a Filesystem	442	(3)
umount: Unmounts a Filesystem	445	(1)
fstab: Keeps Track of Filesystems	445	(2)
fsck: Checks Filesystem Integrity	447	(1)
tune2fs: Changes Filesystem Parameters	447	(2)
RAID Filesystem	449	(1)
Chapter Summary	450	(1)
Exercises	450	(1)
Advanced Exercises	451	(2)
13 Downloading and Installing Software	453	(32)
system-config-packages: Adds and Removes Software Packages	453	(2)
rpm: Red Hat Package Manager	455	(3)
Querying Packages and Files	456	(1)
Installing, Upgrading, and Removing Packages	457	(1)
Installing a Linux Kernel Binary	458	(1)
Installing Non-rpm Software	458	(2)
The /opt and /usr/local Directories	458	(1)
GNU Configure and Build System	459	(1)
Keeping Software Up-to-Date	460	(9)
Bugs	461	(1)
Errata	461	(1)
Fedora, Red Hat Enterprise Linux, Red Hat Network, and up2date	462	(5)
Red Hat Network (RHEL)	467	(2)
Keeping the System Up-to-Date	469	(13)
yum: Updates and Installs Packages	469	(3)
Apt: An Alternative to yum	472	(6)
BitTorrent	478	(3)
wget: Download Files Noninteractively	481	(1)
Chapter Summary	482	(1)
Exercises	482	(1)
Advanced Exercises	483	(2)
14 Printing with CUPS	485	(22)
Introduction	485	(2)
Prerequisites	486	(1)
More Information	486	(1)
JumpStart I: Configuring a Local Printer Using system-config-printer	487	(2)
JumpStart II: Configuring a Remote Printer Using CUPS	489	(3)
Traditional UNIX Printing	492	(1)
Configuring Printers Using CUPS	493	(7)
The CUPS Web Interface	493	(2)
CUPS on the Command Line	495	(4)
Sharing CUPS Printers	499	(1)
The GNOME Print Manager	500	(1)
The KDE Printing Manager	501	(1)
Integration with Windows	502	(2)
Printing from Windows	502	(2)
Printing to Windows	504	(1)
Chapter Summary	504	(1)
Exercises	505	(1)
Advanced Exercises	505	(2)
15 Rebuilding the Linux Kernel	507	(14)
Preparing the Source Code	508	(1)
Locating the Source Code	508	(1)
Installing the Source Code	508	(1)
Read the Documentation	509	(1)
Configuring and Compiling the Linux Kernel	509	(4)
Cleaning the Source Tree	509	(1)
Configuring the Linux Kernel	510	(2)
Compiling the Linux Kernel	512	(1)
Using Loadable Kernel Modules	512	(1)
Installing the Kernel and Associated Files	513	(1)
Changing lilo.conf (RHEL)	513	(1)
grub.conf	513	(1)
Rebooting	514	(1)
Boot Loader	514	(3)
grub: The Linux Loader	514	(2)
lilo: The Linux Loader (RHEL)	516	(1)
LOADLIN: A DOS-Based Linux Loader	517	(1)
dmesg: Display Kernel Messages	517	(1)
Chapter Summary	518	(1)
Exercises	519	(1)
Advanced Exercises	519	(2)
16 Administration Tasks	521	(30)
Configuring User and Group Accounts	521	(3)
system-config-users: Manages User Accounts	521	(2)
useradd: Adds a User Account	523	(1)
userdel: Removes a User Account	523	(1)
groupadd: Adds a Group	523	(1)
Backing Up Files	524	(7)
Choosing a Backup Medium	525	(1)
Backup Utilities	525	(3)
Performing a Simple Backup	528	(1)
dump, restore: Back Up and Restore Filesystems	529	(2)
Scheduling Tasks	531	(1)
cron and crontab: Schedule Routine Tasks	531	(1)
at: Runs Occasional Tasks	531	(1)
kcron: Schedules Tasks	532	(1)
System Reports	532	(3)
vmstat: Reports Virtual Memory Statistics	533	(1)
top: Lists Processes Using the Most Resources	534	(1)
Keeping Users Informed	535	(1)
Creating Problems	536	(1)
Failing to Perform Regular Backups	536	(1)
Not Reading and Following Instructions	536	(1)
Failing to Ask for Help When Instructions Are Not Clear	536	(1)
Deleting or Mistyping a Critical File	537	(1)
Solving Problems	537	(11)
Helping When a User Cannot Log In	537	(1)
Speeding Up the System	538	(1)
Isof: Finds Open Files	539	(1)
Keeping a Machine Log	539	(1)
Keeping the System Secure	540	(1)
Log Files and Mail for root	541	(1)
Monitoring Disk Usage	541	(2)
logrotate: Manages Log Files	543	(2)
Removing Unused Space from Directories	545	(1)
Disk Quota System	545	(1)
syslogd: Logs System Messages	546	(2)
Chapter Summary	548	(1)
Exercises	548	(1)
Advanced Exercises	549	(2)
17 Configuring a LAN	551	(10)
Setting Up the Hardware	551	(3)
Connecting the Computers	552	(1)
Gateways and Routers	553	(1)
Network Interface Card (NIC)	553	(1)
Configuring the Systems	554	(3)
system-config-network: Configuring the Hardware	555	(2)
iwconfig: Configuring a Wireless NIC	557	(1)
Setting Up Servers	557	(2)
More Information	559	(1)
Summary	559	(1)
Exercises	559	(1)
Advanced Exercises	560	(1)
PART V Using Clients and Setting Up Servers	561	(242)
18 OpenSSH: Secure Network Communication	563	(20)
Introduction	563	(1)
About OpenSSH	564	(3)
Files	564	(2)
How OpenSSH Works	566	(1)
More Information	567	(1)
OpenSSH Clients	567	(7)
Prerequisites	567	(1)
JumpStart: Using ssh and scp	567	(1)
Setup	568	(2)
ssh: Connect to and Execute Commands on a Remote System	570	(2)
scp: Copying a File from/to a Remote System	572	(1)
sftp: A Secure FTP Client	573	(1)
~/.ssh/config and /etc/ssh/ssh_config Configuration Files	573	(1)
sshd: OpenSSH Server 574
Prerequisites	574	(1)
JumpStart: Starting the sshd Daemon	575	(1)
Authorized Keys: Automatic Login	575	(2)
Command Line Options	577	(1)
/etc/ssh/sshd_config Configuration File	577	(1)
Troubleshooting	578	(1)
Tunneling/Port Forwarding	579	(2)
Chapter Summary	581	(1)
Exercises	582	(1)
Advanced Exercises	582	(1)
19 FTP: Transferring Files Across a Network	583	(26)
Introduction	583	(1)
More Information	584	(1)
FTP Client	585	(9)
Prerequisites	585	(1)
JumpStart: Downloading Files Using ftp	585	(3)
Notes	588	(1)
Anonymous FTP	589	(1)
Automatic Login	589	(1)
Binary versus ASCII Transfer Mode	589	(1)
ftp Specifics	590	(4)
FTP Server (vsftpd)	594	(12)
Prerequisites	594	(1)
Notes	594	(1)
JumpStart: Starting a vsftpd Server	595	(1)
Testing the Setup	595	(1)
vsftpd.conf: Configuring vsftpd	596	(10)
Chapter Summary	606	(1)
Exercises	607	(1)
Advanced Exercises	607	(2)
20 sendmail: Setting Up Mail Clients, Servers, and More	609	(28)
Introduction	610	(2)
Prerequisites	610	(1)
More Information	611	(1)
JumpStart I: Configuring sendmail on a Client	612	(1)
JumpStart II: Configuring sendmail on a Server	612	(1)
How sendmail Works	613	(4)
Mail logs	614	(1)
Aliases and Forwarding	614	(2)
Related Programs	616	(1)
Configuring sendmail	617	(5)
The sendmail.mc and sendmail.cf Files	617	(2)
Other Files in /etc/mail	619	(3)
In Addition to sendmail	622	(9)
SpamAssassin	622	(3)
Webmail	625	(2)
Mailing Lists	627	(1)
Setting Up an IMAP or POP3 Server	628	(1)
Setting Up KMail	629	(2)
Authenticated Relaying	631	(2)
Alternatives to sendmail	633	(1)
Chapter Summary	633	(1)
Exercises	634	(1)
Advanced Exercises	634	(3)
21 NIS: Network Information Service	637	(18)
Introduction to NIS	637	(1)
How NIS Works	638	(2)
More Information	640	(1)
NIS Client Setup	640	(5)
Prerequisites	640	(1)
Notes	641	(1)
Step-by-Step	641	(1)
Test the Setup	642	(1)
yppasswd: Changing NIS Passwords	643	(2)
NIS Server Setup	645	(7)
Prerequisites	645	(1)
Notes	645	(1)
Step-by-Step	646	(5)
Testing	651	(1)
yppasswdd: NIS Password Update Daemon	651	(1)
Chapter Summary	652	(1)
Exercises	652	(1)
Advanced Exercises	653	(2)
22 NFS: Sharing Filesystems	655	(20)
Introduction	655	(3)
More Information	658	(1)
NFS Client	658	(6)
Prerequisites	658	(1)
JumpStart: Mounting a Remote Directory Hierarchy	658	(2)
mount: Mounts a Directory Hierarchy	660	(2)
Improving Performance	662	(1)
/etc/fstab: Mounts Directory Hierarchies Automatically	663	(1)
NFS Server	664	(7)
Prerequisites	664	(1)
JumpStart: system-config-nfs: Configures an NFS Server	664	(1)
Exporting a Directory Hierarchy	665	(5)
exportfs: Maintains the List of Exported Directory Hierarchies	670	(1)
Testing the Server Setup	670	(1)
automount: Mounting Directory Hierarchies Automatically	671	(2)
Chapter Summary	673	(1)
Exercises	673	(1)
Advanced Exercises	674	(1)
23 Samba: Integrating Linux and Windows	675	(24)
Which Version of Samba?	675	(1)
Introduction	676	(1)
About Samba	677	(2)
Prerequisites	677	(1)
More Information	677	(1)
Samba Users, User Maps, and Passwords	677	(2)
JumpStart: system-config-samba: Configuring a Samba Server	679	(2)
swat: Configuring a Samba Server	681	(3)
Manually Configuring a Samba Server	684	(7)
Parameters in the smbd.conf File	685	(6)
The [homes] Share: Sharing Users' Home Directories	691	(1)
Accessing Linux Shares from Windows	691	(1)
Browsing Shares	691	(1)
Mapping a Share	691	(1)
Accessing Windows Shares from Linux	692	(2)
smbtree: Displaying Windows Shares	692	(1)
smbclient: Connecting to Windows Shares	692	(1)
Browsing Windows Networks	693	(1)
smbmount: Mounting Windows Shares	693	(1)
Troubleshooting	694	(2)
Chapter Summary	696	(1)
Exercises	696	(1)
Advanced Exercises	697	(2)
24 DNS/BIND: Tracking Domain Names and Addresses	699	(38)
Introduction to DNS	699	(11)
Nodes, Domains, and Subdomains	701	(1)
Zones	702	(1)
Queries	703	(1)
Servers	704	(1)
DNS Database	705	(2)
DNS Query and Response	707	(1)
Reverse Name Resolution	708	(2)
About DNS	710	(1)
How DNS Works	710	(1)
Prerequisites	711	(1)
More Information	711	(1)
JumpStart 1: Setting Up a DNS Cache	711	(1)
JumpStart II: system-config-bind: Setting Up a Domain	712	(3)
Setting Up BIND	715	(9)
named.conf	715	(2)
Zone Files	717	(1)
A DNS Cache	717	(4)
DNS Glue	721	(1)
TSIG (Transaction Signatures)	722	(2)
Running BIND Inside a chroot Jail	724	(1)
Troubleshooting	724	(1)
A Full-functioned Nameserver	725	(4)
A Slave Server	729	(1)
A Split Horizon Server	730	(5)
Chapter Summary	735	(1)
Exercises	735	(1)
Advanced Exercises	736	(1)
25 iptables: Setting Up a Firewall	737	(22)
How iptables Works	737	(3)
About iptables	740	(1)
More Information	740	(1)
Prerequisites	740	(1)
Notes	741	(1)
JumpStart: Using system-config-securitylevel to Build a Firewall	741	(1)
Anatomy of an iptables Command	742	(2)
Building a Set of Rules	744	(7)
Commands	744	(1)
Packet Match Criteria	745	(1)
Display Criteria	746	(1)
Match Extensions	746	(2)
Targets	748	(2)
Copying Rules to and from the Kernel	750	(1)
A Rule Set Generated by system-config-securitylevel	751	(1)
Sharing an Internet Connection Using NAT	752	(4)
Connecting Several Clients to a Single Internet Connection	753	(2)
Connecting Several Servers to a Single Internet Connection	755	(1)
Chapter Summary	756	(1)
Exercises	756	(1)
Advanced Exercises	757	(2)
26 Apache (httpd): Setting Up a Web Server	759	(44)
Introduction	760	(1)
About Apache	760	(2)
Prerequisites	760	(1)
More Information	761	(1)
Notes	762	(1)
JumpStart I: Getting Apache Up and Running	762	(2)
Modifying the httpd.conf Configuration File	762	(1)
Testing Apache	763	(1)
Putting Your Content in Place	763	(1)
JumpStart II: Setting Up Apache with system-config-httpd	764	(2)
Filesystem Layout	766	(1)
Configuration Directives	767	(21)
Directives I: Directives You May Want to Modify As You Get Started	768	(4)
Contexts and Containers	772	(4)
Directives II	776	(12)
The Red Hat httpd.conf File	788	(2)
Section 1: Global Environment	788	(1)
Section 2: Main Server Configuration	789	(1)
Section 3: Virtual Hosts	790	(1)
Redirects	790	(1)
Multiviews	791	(1)
Server Generated Directory Listings (Indexing)	791	(1)
VirtualHosts	791	(1)
Troubleshooting	792	(1)
Modules	793	(6)
Module List	793	(1)
mod_cgi and CGI Scripts	794	(1)
mod_ssl	795	(2)
Authentication Modules and .htaccess	797	(1)
Scripting Modules	798	(1)
webalizer: Analyzing Web Traffic	799	(1)
MRTG: Monitoring Traffic Loads	799	(1)
Error Codes	799	(1)
Chapter Summary	800	(1)
Exercises	801	(1)
Advanced Exercises	801	(2)
PART VI Programming	803	(98)
27 Programming Tools	805	(46)
Programming in C	805	(8)
Checking Your Compiler	806	(1)
A C Programming Example	807	(3)
Compiling and Linking a C Program	810	(3)
Using Shared Libraries	813	(3)
Fixing Broken Binaries	815	(1)
Creating Shared Libraries	816	(1)
make: Keeps a Set of Programs Current	816	(7)
Implied Dependencies	818	(3)
Macros	821	(2)
Debugging C Programs	823	(10)
gcc: Compiler Warning Options Find Errors in Programs	826	(2)
Symbolic Debugger	828	(5)
Threads	833	(1)
System Calls	834	(2)
strace: Traces System Calls	834	(1)
Controlling Processes	835	(1)
Accessing the Filesystem	835	(1)
Source Code Management	836	(10)
CVS: Concurrent Versions System	837	(9)
Chapter Summary	846	(1)
Exercises	847	(1)
Advanced Exercises	848	(3)
28 Programming the Bourne Again Shell	851	(50)
Control Structures	852	(32)
if...then	852	(4)
if...then...else	856	(2)
if...then...elif	858	(6)
for...in	864	(2)
for	866	(2)
while	868	(4)
until	872	(2)
break and continue	874	(1)
case	874	(7)
select	881	(1)
Here Document	882	(2)
Expanding Null or Unset Variables	884	(2)
:- Uses a Default Value	885	(1)
:= Assigns a Default Value	885	(1)
:? Displays an Error Message	886	(1)
String Pattern Matching	886	(1)
Filename Generation	887	(1)
Builtins	887	(7)
exec: Executes a Command	887	(2)
trap: Catches a Signal	889	(3)
A Partial List of Builtins	892	(2)
Functions	894	(2)
Chapter Summary	896	(1)
Exercises	897	(2)
Advanced Exercises	899	(2)
PART VII Appendixes	901	(54)
A Regular Expressions	903	(10)
Characters	903	(1)
Delimiters	904	(1)
Simple Strings	904	(1)
Special Characters	904	(3)
Periods	904	(1)
Brackets	905	(1)
Asterisks	906	(1)
Carets and Dollar Signs	906	(1)
Quoting Special Characters	907	(1)
Rules	907	(1)
Longest Match Possible	907	(1)
Empty Regular Expressions	908	(1)
Bracketing Expressions	908	(1)
The Replacement String	908	(1)
Ampersand	909	(1)
Quoted Digit	909	(1)
Extended Regular Expressions	909	(2)
Appendix Summary	911	(2)
B Help	913	(8)
Solving a Problem	913	(1)
Finding Linux-Related Information	914	(6)
Documentation	915	(1)
Useful Linux Sites	916	(1)
Linux Newsgroups	917	(1)
Mailing Lists	917	(1)
Words	917	(1)
Software	918	(1)
Office Suites and Word Processors	919	(1)
Specifying a Terminal	920	(1)
C Security	921	(22)
Encryption	922	(5)
Public Key Encryption	923	(1)
Symmetric Key Encryption	924	(1)
Encryption Implementation	925	(1)
GnuPG/PGP	926	(1)
File Security	927	(1)
Email Security	927	(1)
MTAs (Mail Transfer Agents)	928	(1)
MUAs (Mail User Agents)	928	(1)
Network Security	928	(3)
Network Security Solutions	929	(1)
Network Security Guidelines	930	(1)
Host Security	931	(5)
Login Security	932	(1)
Remote Access Security	933	(1)
Viruses and Worms	934	(1)
Physical Security	935	(1)
Security Resources	936	(4)
Appendix Summary	940	(3)
D The Free Software Definition	943	(4)
E The Linux 2.6 Kernel	947	(8)
Native Posix Thread Library (NPTL)	947	(1)
IPSecurity (IPSec)	948	(1)
Asynchronous I/O (AIO)	948	(1)
O(1) Scheduler	949	(1)
OProfile	949	(1)
kksymoops	949	(1)
Reverse Map Virtual Memory (rmap VM)	950	(1)
HugeTLBFS (Translation Look-Aside Buffer File System)	950	(1)
Remap_file_pages	950	(1)
2.6 Network Stack Features (IGMPv3, IPv6, and Others)	951	(1)
Internet Protocol Virtual Server (IPVS)	951	(1)
Access Control Lists (ACLs)	951	(1)
4GB-4GB Memory Split: Physical Address Extension (PAE)	951	(1)
Scheduler Support for HyperThreaded CPUs	952	(1)
Block I/O (BIO) Block Layer	952	(1)
Support for > 2TB Filesystem	952	(1)
New I/O Elevators	953	(1)
Interactive Scheduler Response Tuning	953	(2)
Glossary	955	(54)
Index	1009

Excerpts

Whether you are an end user, a system administrator, or a little of each, this book explains, with step-by-step examples, how to get the most out of your Fedora Core or Red Hat Enterprise Linux system. In 28 chapters, this book takes you from installing a Fedora Core or Red Hat Enterprise Linux system through understanding its inner workings, to setting up secure servers.This book is designed for a wide range of readers; it does not require programming experience, but some experience using a general-purpose computer is helpful. This book is appropriate for Studentstaking a class in which they use Linux Home userswho want to set up and/or run Linux Professionalswho use Linux at work System administratorswho need an understanding of Linux and the tools that are available to them Computer science studentsstudying the Linux operating system Programmerswho need to understand the Linux programming environment Technical executiveswho want to get a grounding in LinuxA Practical Guide to Red Hat Linux, Second Edition: Fedora Core and Red Hat Enterprise Linuxgives you a broad understanding of many facets of Linux, from installing Red Hat linux through using and customizing it. Regardless of your background, this book gives you the knowledge you need to get on with your work: You will come away from this book understanding how to use Linux, and this book will remain a valuable reference for years to come. This Book Includes the Full Fedora Core 2 on Four CDs Tip: The CDs in This Book Hold the Full Release of Fedora Core 2This book includes the full Fedora Core version 2 CDs, not the truncated publisher's edition CDs. These four CDs include the complete release of Red Hat's Fedora Core 2. See fedora.redhat.com for details.A Practical Guide to Red Hat Linux, Second Edition, includes CDs that you can use to install or upgrade to Fedora Core 2. Chapter 2 helps you get ready to install, and Chapter 3 provides step-by-step instructions on installing, Fedora Core from these CDs. This book guides you through learning about, using, and administrating Fedora Core or Red Hat Enterprise Linux.This book covers Fedora Core 2 and Red Hat Enterprise Linux version 3. Features of This BookThis book is designed and organized so you can get the most out of it in the shortest amount of time. You do not have to read this book in page order. Once you are comfortable using Linux, you can use this book as a reference: Look up a topic of interest in the table of contents or index and read about it. Or think of this book as a catalog of Linux topics: Flip through the pages until a topic catches your eye. This book has many pointers to Web sites where you can get additional information: Consider the Web an extension of this book.A Practical Guide to Red Hat Linux, Second Edition, is structured with the following features: In this book, the termRed Hat Linuxrefers to bothFedora CoreandRed Hat Enterprise Linux. Features that apply to one operating system or the other only are marked as such using these markers:FEDORAorRHEL. Optional sectionsmean you can read the book at different levels, returning to more difficult material when you are ready. Caution boxeshighlight procedures that can easily go wrong, giving you guidance before you run into trouble. Tip boxeshighlight places in the text where you can save time by doing something differently or when it may be useful or just interesting to have additional information. Security boxespoint out places where you can make your system more secure. Thesecurity appendixgives