C


caching-only DNS name servers, 561, 563–565, 801

canonical names (CNAME), 802

case insensitivity of DNS, 568

cat command, 21, 29

cd command, 20

CDs/DVDs

avoiding exam installation from CDs, 89

booting from installation, 91–92

creating installation, 89–90

initial booting from, 89

using linux rescue environment from installation, 735, 736–738

certificates

Dovecot secure, 591

server, 466

chage command, 283–284, 801

chattr command, 801

chcon command, 709

chgrp command, 801

chkconfig command, 167, 169, 619, 801

chmod command, 30–31, 801

chown command, 801

chroot_local_user=YES command, 514

CIDR (Classless Inter-Domain Routing) notation, 618

CIFS (Common Internet File System), 494, 519, 801

classes

adding CUPS printer, 351, 352

IP address, 39, 40

Classless Inter-Domain Routing (CIDR) notation, 618

clients. See also DNS clients; e-mail clients; NFS clients; Samba clients

Apache, 446

configuring with Red Hat Authentication Configuration tool, 316–317

defined, 802

DHCP, 340, 627, 631, 632–633

e-mail, 600–602

finding MAC addresses for DHCP, 631

LDAP for configuring, 314–315

NIS for configuring, 314

NTP, 634–635

Samba, 520–523

sharing NFS directories with, 509–512

SSH, 626

starting display from remote, 675–676

troubleshooting NFS hangs, 503–504

working with symbolically linked files, 503

X Window System, 651–653, 655–657, 667, 669, 817

CNAME (canonical name), 802

command line

adding users from, 276, 277

backslash in, 305

configuring LVM in text mode, 418

controlling services from, 167

DHCP configuration from, 627

editing Apache configuration files from, 475

GRUB, 155–157

managing users from, 283–284

mounting NFS directory from client with, 510

network configuration from, 333

NFS configurations from, 506

NTP configuration not recommended from, 634

registering for Red Hat Network from, 235–236

Samba global setting configurations from, 537

setting disk quotas from, 291

testing mail system from, 600–601

tools for user administration using, 274–277

troubleshooting skills from, 748

using mail utility at, 49–50, 600–601

virtual consoles as, 160

X client options from, 655–657

X Window configuration tools from, 673

command mode in vi, 9–10

command shell. See shells

commands. See also mount command

administrative, 24–25

alternatives, 599

apachectl, 448, 800

arp, 339–340, 800

at, 358, 359, 800

available in no mount linux rescue environment, 741

awk, 24

basic print, 26

bzip2, 37–38

cat, 21, 29

cd, 20

chage, 283–284, 801

chattr, 801

chcon, 709

chgrp, 801

chkconfig, 167, 169, 619, 801

chmod, 30–31, 801

chown, 801

converting passwords to and from shadow files, 33–34

cp, 22

crontab, 36

df, 185–186, 751–752

dhclient, 632

dig, 575–576

dmesg, 29, 803

dumpe2

fs, 754, 755, 803

e2label, 753–754, 755, 803

edquota, 294–298, 803

egrep, 23

env, 27

exportfs, 804

fdisk, 14, 15, 16, 186–187

find, 21, 804

fsck, 14, 17, 740, 755, 804

getfacl, 805

grep, 23

GRUB editing, 149

grub-install, 805

gzip, 37–38

head and tail, 22

host, 575

hosts.allow and hosts.deny, 694

hotswappable devices, 79–80

htpasswd, 805

ifconfig, 42, 333, 337–338, 339, 742, 743, 806

ifup/ifdown, 333, 337

installation console, 128

ip6tables, 698

ipchains, 693

iptables, 48–49, 482, 698–700, 806

less, 21, 29

lftp, 51–53, 807

linux askmethod, 92, 93

ln, 22

locate, 21, 23, 807

lpc, 807

lpc status, 348

LPD, 347–349

lpq, 26, 348, 807

lpr, 26, 348, 808

lprm, 26, 349, 808

ls, 20

ls -Z, 706, 707

lsattr, 808

lvcreate, 417, 808

lvdisplay, 808

lvextend, 418, 808

lvremove, 808

make config, 397–398

make gconfig, 398–400

make help, 409

make menuconfig, 398, 399

make xconfig, 398, 399

man smb.conf, 529

mdadm, 808

mkbootdisk, 809

mkfs, 14, 15–17, 198–199, 755, 809

mklabel, 191, 194

modprobe, 383–384, 809

more and less, 21

mount, 18–19, 185–186, 202, 203, 521–522, 809

mount.cifs, 522, 809

mv, 22

netstat, 42, 338–339, 340, 809

nslookup, 575

partprobe, 195, 810

passwd, 32

ping, 41–42

print, 26

ps, 24

pvcreate, 417, 418, 811

pvdisplay, 811

pwd, 20

quota management, 294

quotacheck, 293, 294, 298, 811

quotaon, 811

repquota, 812

rescue, 90

resize2fs, 813

rndc, 575, 813

rpm -i kernel.rpm, 389, 390

rpm query, 228

rpm -U kernel.rpm, 389, 390

rpmbuild, 231, 813

sed, 23–24

service, 35

service httpd reload, 448

set, 29

setenforce, 708

setfacl, 814

showmount, 814

smbmount, 522

smbpasswd, 533, 534, 535, 814

smbumount, 522

sort, 23

startx, 666–669

su, 34

sudo, 34

switchdesk, 680–681, 746

switches for, 19

sync, 740

system-config-*, 815

system-config-display, 651

system-config-network, 334–336

system-config-samba, 536–537

system-config-securitylevel, 701

tar, 38

tmpwatch, 816

umask, 32, 816

umount.cifs, 522, 809

updatedb, 21, 23

useradd, 276, 277

usermod, 283, 816

vgcreate, 417, 816

vgdisplay, 816

vgextend, 418, 816

volume and volume group, 420–422

vsFTP configuration, 514

wc, 23

who and w, 24–25

xhost, 818

yum, 223, 238–241, 818

Common Internet File System (CIFS), 494, 519, 801

Common Unix Printing System. See CUPS

communication channels, 5–6

compatibility

computer, 71–72

CPUs, 75

hardware, 70–74

Hardware Compatibility List, 72

media devices and filesystem, 12

compressing files, 37–38

computers

effect of multiple controllers on older BIOS, 105

hard drive options for Linux, 7

Linux compatibility with, 71–72

planning IRQ layout for, 6

protecting, 693, 735

RAM requirements, 6–7, 76

updating kernel developments for SMP, 75

.config file, 396–397

configuration files

allowing Web server to run while reading changes to, 448

Apache, 450–451

backing up before editing, 293–294

booting system, 169–172

CUPS, 342

DNS client, 560

DNS server, 561–563

editing Samba, 523–524

/etc/exports for NFS servers, 497

/etc/pam.d/system-auth, 309

/etc/sysconfig/network, 331–332

finding errors in GRUB, 152–155

importance of DNS, 574

kickstart, 245

PAM, 306

Postfix main.cf, 598

sendmail, 592–593

shell, 287–290

Squid, 478–480

/tmp directory, 129

troubleshooting likely errors in, 730–731

using Red Hat Domain Name

Service configuration tool with, 576

window manager, 287

xinetd, 616–618

X.org server, 658

Connect to CUPS Server dialog box, 343–344

consoles

installation, 127–129

virtual, 160

control flags for PAM, 306, 307

controllers for PC cards, 78

controlling services, 167–169

from command line, 167

Service Configuration tool for, 168–169

text-based services for, 168

verifying runlevel of activated service, 169

copying files, 22

cp command, 22

cpuinfo file, 381–382

CPUs

compatible, 75

detecting information about with cpuinfo file, 381–382

dual- and multi-core, 803

RPM packages for specific types of, 223

virtualization and, 76

crackers

defined, 32

preventing spoofing by, 572

reviewing logins for activity by, 274

Create New Logical Volume dialog (GUI LVM Management tool), 427

Create New Samba User dialog (Samba Server Configuration utility), 541

Create New User dialog (Red Hat User Manager), 279–280

Create Samba Share dialog (Samba Server Configuration utility), 539

cron daemon

about, 36, 354, 802

creating job settings, 357–358

routing messages with MAILTO variable, 355

securing, 359–360

SELinux settings for, 357

setting up for users, 357

using crontab file, 355–357

crontab command

defined, 802

managing cron jobs with, 36

crontab file, 355–357

CUPS (Common Unix Printing System), 341–354

about, 25–26, 330

Administration tab for, 350–351

configuration files for, 342

controlling with LPD commands, 347–349

defined, 802

installing and starting, 341

SELinux protection and, 354

tabs of, 349–350

using Red Hat Printer

Configuration tool, 342–347

verifying sharing, 351–353

Web-based interface for, 349–351

cylinders. See also hard drives

BIOS limits on reported, 105

defined, 96

Cyrus IMAP, 586



RHCE Red Hat Certified Engineer Linux Study Guide (Exam RH302)
Linux Patch Management: Keeping Linux Systems Up To Date
ISBN: 0132366754
EAN: 2147483647
Year: 2004
Pages: 227
Authors: Michael Jang

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