![]() ![]() If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. The /etc/apt/sources.list file is used to locate the desired packages. All packages required by the package(s) specified for installation will also be retrieved and installed. ![]() Each package is a package name, not a fully qualified filename. ![]() APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software packages, either from precompiled files or by compiling source code.Īpt-get is the command-line tool for handling packages, and may be considered the user's "back-end" to other tools using the APT library.Īpt-get install is followed by one or more packages desired for installation or upgrading. Once the system is up and running, any of the software collections listed in the dialog in Figure 4-11 above can be installed manually from within a running Ubuntu system using the tasksel tool.More information about install using apt-getĪdvanced Package Tool, or APT, is a free software user interface that works with core libraries to handle the installation and removal of software on Debian, Ubuntu and other Linux distributions. 1.7 Installing Software Collections After System Setup Once the installation is complete, remove the installation media, press the Enter key and wait while the system reboots. Accept the use of UTC unless the system is dual booting with Windows, in which case this option should not be selected. Finally, the installer will seek confirmation that the system is to use Coordinated Universal Time (UTC). Once the software has been installed, a screen will appear seeking confirmation that the master boot record on the disk can be modified to add the Ubuntu boot options. Once you have placed asterisks next to all of the items you need, select the Continue option and wait while the selected packages are downloaded and installed. Learn more.īased on your requirements, select the collections you believe you will need (keeping in mind that packages can be added and removed later from within the running system). ![]() Buy the full book now in eBook ($14.99) or Print ($36.99) format. You are reading a sample chapter from Ubuntu 20.04 Essentials. The Network installer image for Ubuntu 20.04 can be downloaded from the following web page: 1.2 Obtaining the Network Installer Image Options are also available to install a basic server environment with optional additional server related packages such as web server, mail server and database software.Īll of these packages can, of course, be added or removed after installation is complete when using the Server and Desktop images, but if you want to use a small installation image that can be quickly written to a USB drive and allows you to pre-install many software dependencies, the Network installer is an ideal option. The Network installer, on the other hand, lets you install various desktop environments including KDE Plasma (Kubuntu) and LXQt (Lubuntu). The Ubuntu Desktop ISO image, for example, will only install the GNOME desktop environment. While the Server and Desktop images provide very little choice in terms of configuration options during installation, the Network installer provides an extensive list of pre-defined software collections from which to choose during installation. This option requires an internet connection to download additional packages during installation and uses the text-based installer. The Network installer (also referred to as Netboot) image provides a small image (approximately 50MB in size compared to more than 2GB for the Desktop image) that can be used to install either the server or desktop-based Ubuntu environments. This chapter will go into more detail regarding the use of the Network installer image to install Ubuntu. The previous chapter explored the different options available when installing Ubuntu with a particular emphasis on using the graphical installer. ![]()
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