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developed by its users. This means, for the most part, that the hardware supported by Linux is that which users and developers actually have access to. As it turns out, most of the popular hardware and peripherals for 80x86 systems are supported (in fact, Linux probably supports more hardware than any commercial implementation of Unix). However, some of the more obscure and esoteric devices, as well as those with proprietary drivers for which the manufacturers do not easily make the specifications available, aren't supported yet. As time goes on, a wider range of hardware will be supported, so if your favorite devices aren't listed here, chances are that support for them is forthcoming.

Another drawback for hardware support under Linux is that many companies have decided to keep the hardware interface proprietary. The upshot of this is that volunteer Linux developers simply can't write drivers for those devices (if they could, those drivers would be owned by the company that owned the interface, which would violate the GPL). The companies that maintain proprietary interfaces write their own drivers for operating systems, such as Microsoft Windows; the end user (that's you) never needs to know about the interface. Unfortunately, this does not allow Linux developers to write drivers for those devices.

Little can be done about the situation. In some cases, programmers have attempted to write hackish drivers based on assumptions about the interface. In other cases, developers work with the company in question and attempt to obtain information about the device interface, with varying degrees of success.

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[*] Our definition of "hacker" is a feverishly dedicated programmer—a person who enjoys exploiting computers and generally doing interesting things with them. This is in contrast to the common connotation of "hacker" as a computer wrongdoer or an outlaw.

Sources of Linux Information

As you have probably guessed, many sources of information about Linux are available, apart from this book.

Online Documents

If you have access to the Internet, you can get many Linux documents via web and anonymous FTP sites all over the world. If you do not have direct Internet access, these documents may still be available to you; many Linux distributions on CD-ROM contain all the documents mentioned here and are often available off the retail shelf.

A great number of web and FTP archive sites carry Linux software and related documents. Appendix A contains a listing of some of the Linux documents available via the Internet.

Examples of available online documents are the Linux FAQ, a collection of frequently asked questions about Linux; the Linux HOWTO documents, each describing a specific aspect of the system—including the Installation HOWTO, the Printing HOWTO, and the Ethernet HOWTO; and the Linux META-FAQ, a list of other sources of Linux information on the Internet.

Additional documentation , individually hosted "HOWTOs," blogs, knowledge bases, and forums exist that provide significant material to help individuals use Linux. Distributors maintain diverse mailing lists and forums dealing with a variety of subjects from using Linux on a laptop to configuring web servers. Such web sites and digests of mailing lists have largely taken over for Linux-related Usenet newsgroups; see "Usenet Newsgroups" later in this chapter.

The central Linux Documentation home page is available to web users at http://www.tldp.org. This page contains many HOWTOs and other documents, as well as pointers to other sites of interest to Linux users, including the Linux Documentation Project manuals (see the following section).

Books and Other Published Works

There are a number of published works specifically about Linux. In addition, a number of free books are distributed on the Internet by the Linux Documentation Project (LDP), a project carried out over the Internet to write and distribute a bona fide set of "manuals" for Linux. These manuals are analogs to the documentation sets available with commercial versions of Unix: