apt-get install não funciona [duplicado]

Question

aqui é o que a máquina mostra

#apt-get install tor
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package tor is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'tor' has no installation candidate

    

Answer 1

Em Debian / Ubuntu você precisa adicionar fontes corretas em /etc/apt/sources.list :

deb http://deb.torproject.org/torproject.org stretch main
deb-src http://deb.torproject.org/torproject.org stretch main

Depois disso, você deve executar:

apt-get update
apt-get install tor

Para o Kali Linux, leia este tópico.