As discussed in Chapter 3, you should update your software as soon as you log in to Ubuntu for the first time to benefit from any available security and bug fixes. In that example, we used the Update Manager, which is really a GUI wrapper for the command apt-get. In the background, Ubuntu automatically polls the software repositories configured as standard to determine whether any updates are available. When it detects that new versions of installed software are available, a pop-up message appears in the upper-right corner of your screen (see Figure 4.1). By clicking the Updates icon in the panel, you automatically open Update Manager, but not before you are prompted for your password (because you are about to make a systemwide change).
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