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Medium 9781617833816

Natural Wonder

Source: Tennessee
Slice PDF May 14, 2014

Medium 9780596006440

11. Finding Help

Slice ePub May 29, 2014

It's 2:00 a.m. You want to bid on a pair of rare, pricey Bart Simpson flip flops in an auction that ends in four hours. But the seller has a feedback score of 96 percent and not many comments. Where do you go to ask whether this seller is worth a risk?

eBay offers help in several different formats, including a Learning Center just for newbies, a Help page, interactive help via live chat or email, a centralized Services page, a site map, discussion boards, and more. This chapter covers them all.

What eBay doesn't have, to the disappointment of many, is a number for telephone support. Top-level PowerSellers and owners of eBay Stores get a phone support number, but that's it. From time to time, you can find "eBay phone numbers" posted on discussion boards and around the Internet, but these numbers are usually bogus.

When you're new to eBay, the site can feel overwhelming. Instead of jumping in at the deep end, you can test the waters before you take the plunge, thanks to eBay's Learning Center.

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Medium 9780596153724

Cost Case Study: Big Lots

Slice PDF June 15, 2015

Costs map to received value: The absence of license fees does not mean that working with open source has no costs. Employees must be paid, costs for additional hardware borne, and (possibly) commercial support purchased. However, all of those costs are associated with actually using the application, not merely the decision to implement it. This is far different than proprietary systems, in which you pay for a significant part of the total project cost before you use it.

As the global economy grows and IT becomes more embedded in every business offering, software license fees will increasingly become burdensome. IT organizations facing the dilemma of growing demands and decreasing budget will need to get off the proprietary license treadmill—the “gift that keeps giving”—and aggressively implement open source wherever possible.

Cost Case Study: Big Lots

Big Lots is a Fortune 500 closeout retailer with over $4.5 billion in annual sales. The company uses seven distribution centers to serve over 1300 retail stores. As typical of many large companies, its technical infrastructure is a mix of different servers, differing software technologies, and limited-functionality end user devices—in the case of Big Lots, these devices are their Point of Sale (POS) systems.

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Medium 9780596003432

6. Managing Users and Groups

Slice ePub May 27, 2014

User accounts and authentication are two of the most important areas for which a system administrator is responsible. User accounts are the means by which users present themselves to the system, prove that they are who they claim to be, and are granted or denied access to the information and resources on a system. Accordingly, properly setting up and managing user accounts is one of the administrator's chief tasks.

In this chapter we consider Unix user accounts, groups, and user authentication (the means by which the system verifies a user's identity). We will begin by spending a fair amount of time looking at the process of adding a new user. Later sections of the chapter will consider passwords and other aspects of user authentication in detail.

From the system's point of view, auser isn't necessarily an individual person. Technically, to the operating system, a user is an entity that can execute programs or own files. For example, some user accounts exist only to execute the processes required by a specific subsystem or service (and own the files associated with it); such users are sometimes referred to as pseudo users . In most cases, however, a user means a particular individual who can log in, edit files, run programs, and otherwise make use of the system.

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Medium 9780596520700

Getting Started

Slice PDF May 27, 2014

Rails Pocket Reference

About Rails Pocket Reference

I have been using Ruby on Rails for almost a year and a half now, which is not long compared to many of my colleagues.

As my passion for the framework and language grew, so did my appetite for more knowledge. Now that I own about 12 books on Ruby on Rails and Ruby, I find that there is a true need for a pocket reference guide to Ruby on Rails.

This book does not contain new information that is not easily accessible online or in printed books. It is not meant to “shed new light” on the language or framework. It is merely my attempt to collect as much useful information as possible that a typical Rails developer like myself might find helpful on a daily basis. A large portion of the book contains actual Rails documentation, as provided by the Rails community, along with annotations and examples from myself and others.

Getting Started

To see whether Rails is running on your computer, type the following at a shell or command prompt: rails --version

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