¿Se puede agregar un repositorio ppa a /etc/apt/source.list?
Por sudo add-apt-repository '<deb url codename component>', se agrega un repositorio al archivo /etc/apt/source.list. Por sudo add-apt-repository ppa:<user>/<ppa-name>, vi que todos los repositorios de ppa se agregan a /etc/apt/source.list.d dir: $ ls /etc/apt/sources.list.d/ ferramroberto-sopcast-precise.list ferramroberto-sopcast-precise.list.save google-talkplugin.list google-talkplugin.list.save kalakris-okular-precise.list kalakris-okular-precise.list.save linrunner-thinkpad-extras-precise.list linrunner-thinkpad-extras-precise.list.save precise-partner.list precise-partner.list.save staticfloat-julia-deps-precise.list staticfloat-juliareleases-precise.list staticfloat-juliareleases-precise.list.save telepathy-ppa-precise.list telepathy-ppa-precise.list.save ubuntu-wine-ppa-precise.list ubuntu-wine-ppa-precise.list.save …