CIT 315 Installing Software Packages, Lecture notes of Computer Networks

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Linux Operations and

Administration

Chapter Nine

Installing Software Packages

Objectives

• Package management
• Manage software packages with the dpkg and apt

commands

• Install, upgrade, and remove software at the

command line

dpkg and APT

• Debian package management system consists of
  • Debian Package (dpkg) is a low-level tool to install,

build, remove and manage Debian packages

• Advanced Packaging Tools (APT) is a collection of

programs that provides a user friendly front-end to

dpkg.

• Example commands are apt, apt-get, aptitude.

Working with dpkg

Command Description dpkg - s x Searches for package x and display status (name, version, description, dependencies) dpkg - l x Searches for package x and display status (name, version, description) dpkg - i x Installs a package x dpkg - r x Removes a package x dpkg - p x Removes package x with configuration (purge)

apt

• apt is a one of the tools included in APT, which

provides the user with features, such as:

• shows a progress bar
• installs a package from the Internet

Working with APT

Command Description apt search x Searches for package x apt install x Installs a package x apt remove x Removes a package x apt purge x Removes package x with configuration apt show x Shows package x details apt update Refreshes repository index apt upgrade Upgrades all upgradable packages

Activity 3: Update your Ubuntu

• use apt to update your Ubuntu, using the following
  • sudo apt update
  • sudo apt upgrade

Manage software using GUI

• Synaptic is a GUI for apt, which may be installed:
  • sudo apt install synaptic