Sources.list

A sources.list é uma lista de espelhos, que são utilizados pelo APT (Advanced Packaging Tool), uma ferramenta para instalação automatizada dos mais diversos pacotes (programas).

Para alterar a sources.list, digite o comando  # nano /etc/apt/sources.list 

Segue aqui a minha sources.list, com os espelhos padrões para o Brasil, e mais alguns espelhos opcionais, que são utilizados nos posts deste blog. 

 ### ----------- REPOSITÓRIOS PADROẼS (JESSIE) -------------- ###

deb http://ftp.br.debian.org/debian/ jessie main contrib non-free
deb-src http://ftp.br.debian.org/debian/ jessie main contrib non-free

deb http://ftp.br.debian.org/debian/ jessie-updates main contrib non-free
deb-src http://ftp.br.debian.org/debian/ jessie-updates main contrib non-free

deb http://security.debian.org/ jessie/updates main contrib
deb-src http://security.debian.org/ jessie/updates main contrib

### ----------- REPOSITÓRIO BACKPORT (TESTING) ----------- ###

#deb http://ftp.br.debian.org/debian/ jessie-backports main contrib non-free
#deb-src http://ftp.br.debian.org/debian/ jessie-backports main contrib non-free

### ----------- REPOSITÓRIO SID (INSTABLE) --------------------- ###

#deb http://ftp.br.debian.org/debian/ sid main
#deb-src http://ftp.br.debian.org/debian/ sid main

### ----------- REPOSITÓRIO POSTGRESQL ------------------------ ###

# -- baixar chave -- #
# wget https://www.postgresql.org/media/keys/ACCC4CF8.asc

# -- instalar chave -- #
# sudo apt-key add ./ACCC4CF8.asc
deb http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main
deb-src http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main

# jessie-updates, previously known as 'volatile'

Documentação completa do APT: 

https://www.debian.org/doc/manuals/apt-howto/index.pt-br.html