Ubuntu 16.04 LTS has two versions of the package manager, Ubuntu Software Center and Ubuntu Software Updater. Ubuntu Software Center is the default package manager and is installed by default on all new installations of Ubuntu 16.04 LTS. It is a graphical user interface (GUI) based package manager that allows users to search for, install, remove and manage software on their computer. Ubuntu Software Updater is a command line based package manager that can be used to update installed software on Ubuntu systems. It can be used to install new software packages as well as update existing ones. ..
The apt-get utilities are simply a front-end to the debian dpkg utility, which actually does the real work. You can use this utility to figure out what version is installed.
Here’s an example, where I was trying to figure out what version of Ruby I had installed on my system:
You can see that I’ve got version 1.8.4 installed.
Package: ruby1.8Status: install ok installedPriority: optionalSection: interpretersInstalled-Size: 272Maintainer: Ubuntu Core Developers ubuntu-devel@lists.ubuntu.comArchitecture: i386Version: 1.8.4-5ubuntu1.2Depends: libc6 (>= 2.4-1), libruby1.8 (>= 1.8.4)Suggests: ruby1.8-examples, rdoc1.8, ri1.8Description: Interpreter of object-oriented scripting language Ruby 1.8Ruby is the interpreted scripting language for quick and easyobject-oriented programming. It has many features to process textfiles and to do system management tasks (as in perl). It is simple,straight-forward, and extensible..This package provides version 1.8 series of Ruby..On Debian, Ruby 1.8 is provided as separate packages. You can getfull Ruby 1.8 distribution by installing following packages..ruby1.8 ruby1.8-dev ri1.8 rdoc1.8 irb1.8 ruby1.8-elispruby1.8-examples libdbm-ruby1.8 libgdbm-ruby1.8 libtcltk-ruby1.8libopenssl-ruby1.8 libreadline-ruby1.8Original-Maintainer: akira yamada akira@debian.org
