apt and package basics in ubuntu 9.04

These instructions are for installing packages from the command-line Terminal. Terminal can be started:

Applications -> Accessories -> Terminal

• Install packages:

aryan@aryan-laptop:~$sudo apt-get install packagename

Example:

aryan@aryan-laptop:~$sudo apt-get install vlc

• Remove packages:

aryan@aryan-laptop:~$sudo apt-get remove packagename

• To remove all dependencies:

aryan@aryan-laptop:~$sudo apt-get autoremove
Example:

aryan@aryan-laptop:~$sudo apt-get remove mpd sbackup

• Search for packages:

aryan@aryan-laptop:~$apt-cache search 
Examples:

aryan@aryan-laptop:~$apt-cache search Music MP3
aryan@aryan-laptop:~$apt-cache search "Text Editor"

• Update the apt package database after adding/removing repositories:

aryan@aryan-laptop:~$sudo apt-get update

• Upgrade packages:

aryan@aryan-laptop:~$sudo apt-get upgrade

• Upgrade the entire distribution (e.g. from Intrepid to Jaunty):

aryan@aryan-laptop:~$sudo apt-get dist-upgrade