otros repositorios

  # Google software repository http://www.google.com/linuxrepositories/apt.html
  deb http://dl.google.com/linux/deb/ stable non-free
  # Unofficial Debian packages
  # http://packages.kirya.net/
  # deb http://packages.kirya.net/debian/ unstable main contrib non-free
  # deb-src http://packages.kirya.net/debian/ unstable main contrib non-free

deb http://archive.ubuntu.com/ubuntu dapper main restricted
deb-src http://archive.ubuntu.com/ubuntu dapper main restricted

deb http://archive.ubuntu.com/ubuntu dapper-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu dapper-updates main restricted

deb http://archive.ubuntu.com/ubuntu dapper universe
deb-src http://archive.ubuntu.com/ubuntu dapper universe

deb http://security.ubuntu.com/ubuntu dapper-security main restricted
deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted

deb http://security.ubuntu.com/ubuntu dapper-security universe
deb-src http://security.ubuntu.com/ubuntu dapper-security universe

deb http://archive.ubuntu.com/ubuntu dapper multiverse
deb-src http://archive.ubuntu.com/ubuntu dapper multiverse

/etc/apt/sources.list.d/dropbox.list

deb http://www.getdropbox.com/static/ubuntu hardy main
deb-src http://www.getdropbox.com/static/ubuntu hardy main

sudo apt-get install software-properties-common

sudo add-apt-repository ppa:stebbins/handbrake-snapshots

ubuntu:

sudo add-apt-repository ppa:libreoffice/ppa

http://unetbootin.github.io/linux_download.html → no funcionó en Debian correctamente

sudo add-apt-repository ppa:gezakovacs/ppa

sudo add-apt-repository ppa:haraldhv/shotcut

usar la tecla META para abrir menú (en KDE, GNOME, …)

sudo add-apt-repository ppa:mehanik/ksuperkey