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Medium 9780596003562

3. Directory Services

Slice ePub May 27, 2014

A directory service manages information about users and resources, such as printers and servers. It can manage this information for anything from a single machine to an entire corporate network. The Directory Service architecture in Mac OS X is called Open Directory. Open Directory encompasses flat files (such as /etc/hosts), NetInfo (the legacy directory service brought over from earlier versions of Mac OS X and NeXTSTEP), LDAPv3, and other services through third-party plug-ins.

This chapter describes how to perform common configuration tasks, such as adding a user or host on Mac OS X with the default configuration. If your system administrator has configured your Macintosh to consult an external directory server, some of these instructions may not work. If thats the case, you should ask your system administrator to make these kinds of changes anyhow!

In Mac OS X 10.1.x and earlier, the system was configured to consult the NetInfo database for all directory information. If you needed to do something simple, such as adding a host, you couldnt just add it to /etc/hosts and be done with it. Instead, you had to use the NetInfo Manager (or NetInfos command-line utilities) to add the host.

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Medium 9780596005672

Installing CVS

Slice PDF May 27, 2014

Whatever unpacking method you use, you are left with the directory /usr/local/src/cvs-1.11.6, which contains the entire source distribution of CVS.

Compiling CVS

This example assumes you want to install CVS in /usr/local:

# cd cvs-1.11.6

# ./configure --prefix /usr/local

# make

When compilation completes, you can run the CVS test suite with the command:

# make check

It can take quite a long time for the tests to complete, so if you do run the test suite, be prepared to let it run for a while before you install CVS.

Installing CVS

The make install command installs the CVS programs and documentation:

# make install

Once this is complete, other configuration steps may be necessary, such as downloading and installing the Secure Shell

(ssh) or setting up your /etc/inetd.conf or /etc/xinetd.conf file so CVS can run in server mode. See the following section for more information.

CVS Administrator Reference

This section provides details on creating and configuring repositories and performing other CVS administrative tasks.

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Medium 9780596102487

6. Routing with Linux

Slice ePub May 27, 2014

Linux on ordinary commodity hardware can handle small to medium routing needs just fine. The low- to mid-range commercial routers use hardware comparable to ordinary PC hardware. The main difference is form factor and firmware. Routers that use a real-time operating system, like the Cisco IOS, perform a bit better under heavy loads than Linux-based routers. Big companies with large, complex routing tables and ISPs need the heavy-duty gear. The rest of us can get by on the cheap just fine. You don't want poor-quality hardware; that's always a bad idea. You just don't need to spend the moon for simple routing like this chapter covers.

The highest-end routers use specialized hardware that is designed to move the maximum number of packets per second. They come with multiple fat data buses, multiple CPUs, and Ternary Content Addressable Memory (TCAM) memory. TCAM is several times faster than the fastest system RAM, and many times more expensive. TCAM is not used in lower-cost devices, and no software can shovel packets as fast as TCAM.

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Medium 9781576753996

Chapter 7 Impact and Consequences

Slice PDF May 14, 2014

Chapter 7

IMPACT AND CONSEQUENCES

Most sponsors regard business impact data as the most important data type because of its connection to business success. For many projects, poor performance in business measures (the business need) is what would have initiated the project. Impact evaluation data close the loop by showing a project’s success in meeting the business needs. This chapter examines a variety of business impact measures and the specific processes needed to collect the measures within a project, but first it addresses the reasons why impact data are measured.

Why Measure Business Impact?

Several rationales support the collection of business impact data related to a project.

Higher-Level Data

Following the assumption that higher-level data create more value for key stakeholders, business impact measures offer more valuable data. Impact data are the consequence of the application and implementation of a project. They represent the bottom-line measures positively influenced when a project is successful. For some stakeholders, these are the most valuable data.

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Medium 9781617831591

CHAPTER 1 Boom, Baby!

Source: Indiana Pacers
Slice PDF May 14, 2014

outstretched arm obstructed

in the hands of Miller. He was

Miller’s vision. But it was to

immediately fouled.

no avail. The net barely moved

Miller had missed some

as Miller’s game-tying shot

crucial free throws against the

swished through the hoop with

Knicks the year before. But he

13.2 seconds to play.

soon made up for that. With his

“Oh he threw it away!”

robot-like precision, his first

Leonard yelled. “Reggie for

free throw dropped straight

three! Boom, Baby! It’s a tie

through the basket: 106–105.

ballgame! Unbelievable!”

His second free throw was a

The

Pacers

momentum

briefly halted when forward

mirror image of the first. It put the Pacers up 107–105.

Sam Mitchell committed an away-from-the-ball

foul

on

Starks. The Knicks’ guard went to the free-throw line.

Starks’s

first

attempt

rattled out. A capacity crowd gasped. Starks took the ball from the referee and hoisted up his second attempt. The ball hit the front iron of the rim and bounced back into play.

Knicks

center

Patrick

Ewing grabbed the rebound, but his jump shot missed as well. This time, the ball landed

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