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But Linux wasn t a complete OS. It was just a kernel, unable to do anything useful without programs running in top of it. So Linux was in search of programs already available for free that emulated the working environment of a UNIX-like computer... which was exactly what the GNU project was producing. Meanwhile the GNU project was struggling to develop a free, open source, UNIX-like kernel... which was exactly what Linus Torvalds and his crew were doing. So a perfect match was found. It is not that both teams merged into one. The GNU project continued with its development of the HURD. It s just that for practical purposes, if one person wanted to have a complete OS, he needed both parts: the Linux kernel and the GNU applications. That was the origin of a very fruitful relationship between Linux and GNU. Today many free software advocates call the OS by the full name GNU/Linux (pronounced GNU slash Linux ). Richard Stallman even proposed the name Lignux one time. It you ever come across a discussion as to whether the OS should be called Linux or GNU/Linux, you should know that the latter name is defended by the followers of Richard Stallman who think his applications are as important as the kernel itself.

On a modern Linux server, it s not necessary to set up /etc/hosts except for local name resolving. So you ll always need your own host name and IP address in this file. This is configured automatically when installing Ubuntu Server.

Listing 8-15. Return the Maximum, Minimum, and Average Handicaps of Members SELECT MAX(Handicap) AS maximum, MIN(Handicap) AS minimum, AVG(Handicap) AS average FROM Member

http://www.kernel.org/pub/linux/kernel/Historic/old-versions/RELNOTES-0.01

For a Linux newbie, one of the most disorienting aspects is: why are there so many versions You just want to use Linux, but which one Linux itself seems to be nowhere all there are to be found are distributions. That is quite true, but the real question you should be asking yourself is: what do I want to do with Linux Anwer that question, and the perfect distribution (or at least a short list of them) should emerge naturally. Distributions appeared at first as a way to make Linux installation easy by integrating all the required software plus additional applications that made that distribution unique. There were some original distributions, and then many that spawned from there in order to achieve a particular goal, and this makes Linux history resemble a tree-like structure. There are commercial distributions, sponsored by companies that sell services associated with their products, and there are completely free distributions. There are even free distributions that are almost 100% copies of commercial distributions! Thus Linux is a never-ending story, like human history, because there will always be new objectives and goals. This dispersion is not a liability for Linux, but one of its major strengths: you ll always have a distribution that matches your exact needs... and if not, you can create your own!

Up to now, we ve talked about stuff related to IP addresses. But the network card itself has settings that you may need to modify, and you ll use the ethtool command to do this. With it, you can change network board properties like link speed and duplex mode. Let s start by displaying some information: use ethtool -i eth0 to see an overview of driver properties that are currently used, as shown in Listing 8-11. Listing 8-11. The ethtool -i Commands Provides an Overview of Driver Properties. root@ZNA:~# ethtool -i eth0 driver: pcnet32 version: 1.33 firmware-version: bus-info: 0000:00:11.0 To change duplex settings and link speed on your network board, you ll use the -s option, followed by one of these arguments: speed: This option changes the speed. Valid options are 10, 100, and 1000. duplex: This option changes the duplex settings. Set it to half or full. port: This specifies what port to use. This option is used for network interfaces with different ports available (which is not very common). Valid choices are tp, aui, bnc, mii, and fibre. autoneg: This option indicates whether you want to use auto negotiation to discover the settings that are used on the network. So, for example, if you want to change the settings of your network card to full duplex and a link speed of 1000 Mbps, use ethtool -s eth0 speed 1000 duplex full. You don t need to bother about configuration files because the settings you change with ethtool are stored in the EEPROM of the network card.