Software package management under Ubuntu Linux#

apt-get update		update the list of available packages and versions
apt-get upgrade		update installed packages to latest version
apt-get install PKG	install package PKG
apt-get remove PKG	remove package PKG
apt-get purge PKG       remove package PKG including config files
dpkg -l			list installed packages
dpkg --purge PKG        remove package and purge config files

apt-cache dumpavail |grep Package: