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You can find some tools in the Linux iputils package such as the ping6 utility that you can use to ping other hosts to check for their availability Note that when using ping6, you always need to specify the interface you want to send the ping packets from: for example, ping6 -I eth0 fe80::2e0:18ff:fe90:9205..

Simply press the left and right mouse buttons at the same time. This emulates a middle-click, although it takes a little skill to get right. Generally speaking, you need to press one button a fraction of a second before you press the other button.

Ubuntu offers two separate methods of cutting and pasting text. The first is identical to Windows. In a word processor or another application that deals with text, you can click and drag (or double-click) the mouse to highlight text, right-click anywhere on it, and then choose to copy or cut the text. In many programs, you can also use the keyboard shortcuts of Ctrl+X to cut, Ctrl+C to copy, and Ctrl+V to paste. However, there s a quicker method of copying and pasting. Simply click and drag to highlight some text and then immediately click the middle mouse button where you want the text to appear. This copies and pastes the highlighted text automatically, as shown in Figure 6-8. This special method of cutting and pasting bypasses the usual clipboard, so you should find that any text you ve copied or cut previously should still be there. The downside is that it doesn t work across all applications within Ubuntu, although it does work with the majority of them.

Listing 8-11. Convert Integers to Floating-Point Numbers to Get a Floating-Point Average SELECT AVG(CONVERT(FLOAT,Handicap)) FROM Member

Also in the same iputils package are the traceroute6 tool that can be used to trace the route to a given destination and the tracepath6 tool, which does more or less the same but without the need to use superuser privileges. You can read more about these tools in the Troubleshooting Network Connections section of this chapter.

Summary

This chapter covered booting into Ubuntu for the first time and discovering the desktop. We looked at starting programs, working with virtual desktops, using the mouse on the Ubuntu desktop, and much more. You should be confident in some basic Ubuntu skills and ready to learn more! In the next chapter, you ll look at getting your system up and running, focusing on items of hardware that you may encounter in day-to-day use.

You ve read about how a network interface is provided with an IP address. But, to be completely functional on the network, you have to specify some routes as well. These routes allow you to communicate with computers on other networks, and, conversely, they allow computers on other networks to communicate with your server. As a minimal requirement, you need a default route. This route specifies where to send packets that don t have a destination on the local network. The router used for the default route is always on the same network as your server; just consider it to be the door that helps you get out of the local network. To set the default route, two tools can be used: the ip tool and the route utility. The ifconfig utility was never meant to create or maintain routes, so you can t use it for this purpose.

This chapter guides you through setting up all the essential components of your Ubuntu installation. This includes hardware configuration, as well as setting up e-mail. It covers the post-installation steps necessary to get your system up and running efficiently. Like all modern Linux distributions, Ubuntu is practically automated when it comes to setting up key hardware and software components. Key software will work from the start, and most hardware will be automatically configured. However, you might need to tweak a few settings to make everything work correctly. Read on to learn more.

Listing 8-11 will give us a result with a lot of decimal places. We can also use a rounding function to specify the number of decimal places we would like included in the output. To round the result to two decimal places, as in 16.88, we would use the statement in Listing 8-12.