Red Hat Linux Networking and System Administration Third Edition phần 5 pptx

... NetworkCHAPTER 3Installing Red Hat Linux CHAPTER 4 Red Hat Linux File System CHAPTER 5 Red Hat System Configuration FilesPartIb3632-X PtO1.F 2/21/02 8:33 AM Page 1 SummaryAs you, the system administrator, ... part introduces the system administrator’s duties. The chapters inthis part discuss planning a network,installing Red Hat Linux, and workingwith the Red Hat Linux file system and configuration ... performance of tasks. As the best system administrators will tell you, system administration is a state of mind.12 Part I: Red Hat Linux System and Network Administration Definedc3632-X Ch01.F...

... ®PRESS®®®PRESS Red Hat Linux Networking and System Administration Linux Solutions from the Experts at Red Hat SECURITY TOOLSINCLUDED ON CD-ROMCollings& WallYour Official Red Hat đ Linux đ ... to Networking and System Administration KURT WALL has worked with Linux and Unix for nine years and is theauthor of several other books, including Red Hat Linux 7.2 WeekendCrash Course and ... of the Linux Bible.■ Plan your network, install Red Hat Linux, and get a handle on the file system and configuration files■ Configure TCP/IP networking, the Network File System, and the...

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... udp 2 049 nfs100003 3 udp 2 049 nfs100003 4 udp 2 049 nfs100003 2 tcp 2 049 nfs100003 3 tcp 2 049 nfs100003 4 tcp 2 049 nfs100021 1 udp 37737 nlockmgr100021 3 udp 37737 nlockmgr100021 4 udp ... files and commands you use to implement, maintain, and monitor the NFS server, and illustrates the server configuration process using a typical NFS setup. On Fedora Core and Red Hat Enterprise Linux ... indicate that the directory will beread/write, that it will be a soft mount, and that the read and write block sizesare 8192 bytes. Recall from Table 12 -4 that a soft mount means that the kernelcan...

... processes to handle incoming databaseconnections and coordinates communication betweenpostgres processes378 Chapter 15 21 _59 9496 ch 15. qxd 8/30/ 05 6:40 PM Page 378 critical because Linux s NFS ... command to set Squid to start and stop automatically:# chkconfig level 0123 456 squid off# chkconfig level 3 45 squid onThe first command disables Squid in all run levels. The second commandcauses ... net-work and the remote nodes, and IP traffic is routed through that tunnel. VNC,on the other hand, while it can be used across a VPN and uses the Internet totransport packets back and forth,...

... unencumbered by required directorystructures and system binaries■■ Support for hidden files and directories■■ Self-contained and does not need to use system binaries or libraries,reducing ... standalone workstation, which is a system that isconnected directly to the Internet and that has some sort of domainname resolution running, you want mail to that machine and tolocalhost (and/ or ... client command toexecute is sftp rather than ftp, and the set of supported commands is morelimited than it is standard FTP commands. One important difference thatbetween clear-text FTP and secure...

... Enterprise Linux, you can access the Red Hat Network using a Web browser.Keeping Your System Updated with up2date and the Red Hat Network 6 07 34_599496 ch26.qxd 8/30/05 7: 19 PM Page 6 07 version ... Enterprise Linux. 612 Chapter 2634_599496 ch26.qxd 8/30/05 7: 19 PM Page 612 -rw-r r 1 mirror mirror 46585 077 Apr 7 19:21 linux- 2.6.11 .7. tar.gz-rw-r r 1 mirror mirror 248 Apr 7 19:21 linux- 2.6.11 .7. tar.gz.sign-rw-r ... 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 registration client.NOTE You can also register for the Red...

... [name]Configuring the System at the Command Line 69536_599496 ch 28. qxd 8/ 30/05 7:24 PM Page 695 key commands for showing, setting, and maintaining the date and time on a Red Hat system, specifically:■■ ... serversSingle-Use CommandsThe hwclock, date, and rdate commands are single-use commands for set-ting the system date and time. That is, hwclock, date, and rdate have noinherent ability to keep a system s ... file system options fsoptions. Table 28- 6 lists mount’s global options.fsoptions is a comma-delimited list of one or more of the options listed inTable 28- 7. 688 Chapter 28 36_599496 ch 28. qxd 8/ 30/05...

... command must be run inside the directory that is going to berestored. So, restore can restore the /home directory with the followingcommands:Backing Up and Restoring the File System 791 39_ 599 496 ... 502680 97 .46 0 243484 1051524724 0.07 14410:27:47 PM 97 32 506068 98 .11 0 24 199 2 1051524724 0.07 14410:27:52 PM 5768 510032 98 .88 0 232348 1051524724 0.07 14410:27:57 PM 25 692 490 108 95 .02 ... (ctime)(continued)Backing Up and Restoring the File System 7 89 39_ 599 496 ch31.qxd 8/30/05 7:13 PM Page 7 89 ■■ fault/s — The number of page faults, which occur when the CPUreads data that is not in an active...

... shell scripts that automate process monitor-ing and management. They use both Bash built-in commands and standard Linux commands and utilities available on any Fedora Core or RHEL system. As is ... command is:mycommand &> /dev/nullThe section titled “Redirecting Standard Output and Standard Error” in theBash man page explains how and why this syntax works.If you use > to redirect ... command << labelcommandinputlabellabel demarcates the beginning and end of the command’s input. commandinput is the input itself and command is the program or utility or com-mand to...