Category Archives: Networking & System Administration

National Vocational computer class professional planning

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This convention not only facilitates transparent access to shared file systems, it also makes it easier to track down problems on the server because you do not have to remember the mapping from an exported file system to a mounted a file system. Used --------- --------------- ------------ ---------- --------- ------------------ ------------------ --------- ONLINE UNDOTBS1 UNDO LOCAL MANUAL 241,172,480 239,075,328 99 ONLINE SYSAUX PERMANENT LOCAL AUTO 272,629,760 270,663,680 99 ONLINE USERS PERMANENT LOCAL AUTO 5,242,880 65,536 1 ONLINE SYSTEM PERMANENT LOCAL MANUAL 513,802,240 503,250,944 98 ONLINE TEMP TEMPORARY LOCAL MANUAL 29,360,128 28,311,552 96 ------------------ ------------------ --------- avg 79 sum 1,062,207,488 1,041,367,040 To obtain a list of all available Oracle DBA scripts while logged into SQL*Plus, run the help.sql script: Next, create a text file named /etc/init.d/dbora as the root user, containing the following: #!/bin/sh # chkconfig: 345 99 10 # description: Oracle auto start-stop script. # # Set ORA_HOME to be equivalent to the $ORACLE_HOME # from which you wish to execute dbstart and dbshut; # # Set ORA_OWNER to the user id of the owner of the # Oracle database in ORA_HOME.

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Red Hat Linux System Administration Handbook by Komarinski

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The port address is a 16-bit number that specifies a particular service or application on the destination machine that should receive the data. Judicious use of the \t and \n escape sequences solves the jumbled output problem: \t, the tab character, separates the name and version number fields, and \n, the newline, puts the command prompt back on its own line, where it belongs. By default it contains many system account aliases. Posted Sep 16, 2003 Linux's venerable file and user permissions system is solid and dependable, but not very flexible, unfortunately.

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Linux Administration: The Linux Operating System and Command

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Consider a variable named STRVAR with the value See Rock City!. For example, if / is on /dev/sdb and a new drive is added to the system with a lower SCSI ID, the drive that was previously /dev/sdb becomes /dev/sdc. Have only one or a few centralized e-mail servers, depending on the size of your organization. My lab is made of: Microsoft Windows Server 2008 R2 w/SP1. In this case it's 255 minus N hops, where N is the TTL of the returning Echo Replies. At this point, you are ready to build and install the kernel as explained in the section titled “Compiling and Installing the New Kernel.” Figure 17-35: Save the kernel configuration before exiting the configuration tool.

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Linux: Operating Systems: Linux Bootcamp - The Ultimate

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Improving Efficiency via Automation of Business Processes. Building on core skills you already have, these titles share solutions and expertise so you become a highly productive power user. What's not always appreciated, however, is just how significant a portion of the market Linux servers are getting to be. The first step is to locate the software package you want. Because the command line specified --with-readline, the last two checking lines make sure the readline library is installed (checking for readline in -lreadline... yes) and that the appropriate header file, readline.h, is installed.

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Setting Up A Linux Internet Server Visual Black Book: A

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To solve this problem, wait until you can log in, then log in as root to investigate and solve the problem. To create a new printer, type the name of the printer and click Create Printer. You also have to keep in mind that since you are connecting to the host called localhost, but its really a port going to a different SSH server, you may wind up with a different host key for localhost the next time you connect to localhost. The Linux man pages give more details on other ethtool options, but you can get a quick guide by just entering the ethtool command alone, which provides a quicker summary.

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Red Hat Enterprise Linux (RHEL) 6 Server Installation &

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HEXBIN hexbin takes in Macintosh binhex files and converts them to a Unix readable format. Remember that you used the first IP address on this network for the gateway computer. It's like nice for I/O Use faster crypto for local LAN. These tasks include modifying existing file systems, creating new ones, fixing broken ones, monitoring all of them, and ensuring that users do not monopolize any of them. This address is used when a machine wants to make a TCP/IP connection to itself.

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Linux Administration: A Beginner's Guide, Third Edition by

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Chapter 16: Using the Red Hat Network 417 Search Errata Alerts tab Returning to the Main page, click the Search Errata Alerts tab on the navigation bar. Reverse lookup enables you to enter the IP number and obtain the name. After the initial synchronization, group members periodically resynchronize their replicated stores to ensure that all group members consistently have the same view. Vendors can use a CD-ROM to distribute a large amount of information at a reasonable cost.

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Advanced Linux Networking

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You can select who will be the member of the group, and who can be removed from a group. After a while the partition becomes fragmented. If 246 Part II: Red Hat Linux Network Services no configuration file is present, papd attempts to expose all printers present in the lapd configuration file /etc/printcap to the network. Spanning tree protocols main taks is to stop network loops from occurring on your layer 2 network. Use the cron facility for programs and scripts that need to run on some sort of regular schedule.

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Guide to Linux Installation and Administration

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In some cases, the O2CB heartbeat threshold value had to be increased to as high as 601 in order to prevent OCFS2 from panicking the kernel. Chapter 14: Configuring Mail Services 349 Figure 14-3: Setting up your incoming and outgoing mail servers 4. Its address space has since been extended from 12 bit to 32 bit, so it can handle very large file systems. This parameter is intended for caching name servers and tells them how long to hold the data in their cache. Byobu is a Japanese word for the decorative screens or room dividers that often adorn Japanese homes.

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DB2 9 for Linux, UNIX, and Windows Advanced Database

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Additionally, many providers have taken to providing their services in specialized non-standard ways which assume their customers will be using Windows. Vista includes technologies which employ fast flash memory to improve system performance by chaching commonly used programs and data. Since these protocols run over AX.25, they have the same hardware requirements. As you see in the following sections, this task is just a matter of following instructions.

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