root@debian:/etc/apt/apt.conf.d#  head -v -n -0 /etc/apt/sources.list{,.d/*}
head: cannot open '/etc/apt/sources.list' for reading: No such file or directory
==> /etc/apt/sources.list.d/00.sgvtcaew4bxjd7ln.onion.list <==
deb tor+http://sgvtcaew4bxjd7ln.onion/ stretch/updates main

==> /etc/apt/sources.list.d/00.sgvtcaew4bxjd7ln.onion.list.save <==
deb tor+http://sgvtcaew4bxjd7ln.onion/ jessie/updates main

==> /etc/apt/sources.list.d/00.vwakviie2ienjx6t.onion.list <==
deb tor+http://vwakviie2ienjx6t.onion/debian/ stretch main
deb-src tor+http://vwakviie2ienjx6t.onion/debian/ stretch main

# aka volatile
deb tor+http://vwakviie2ienjx6t.onion/debian/ stretch-updates main
deb-src tor+http://vwakviie2ienjx6t.onion/debian/ stretch-updates main

deb tor+http://vwakviie2ienjx6t.onion/debian stretch-backports main
deb-src tor+http://vwakviie2ienjx6t.onion/debian/ stretch-backports main

==> /etc/apt/sources.list.d/99.security.debian.org.list <==
deb http://security.debian.org/ stretch/updates main