root@debian:/home/melvin/Downloads# apt-cache policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://dl.google.com/linux/earth/deb/ stable/main amd64 Packages
     release v=1.0,o=Google, Inc.,a=stable,n=stable,l=Google,c=main
     origin dl.google.com
 500 http://security.debian.org/ stretch/updates/non-free Translation-en
 500 http://security.debian.org/ stretch/updates/main Translation-en
 500 http://security.debian.org/ stretch/updates/contrib Translation-en
 500 http://security.debian.org/ stretch/updates/non-free amd64 Packages
     release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=non-free
     origin security.debian.org
 500 http://security.debian.org/ stretch/updates/contrib amd64 Packages
     release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=contrib
     origin security.debian.org
 500 http://security.debian.org/ stretch/updates/main amd64 Packages
     release v=9,o=Debian,a=stable,n=stretch,l=Debian-Security,c=main
     origin security.debian.org
 500 http://httpredir.debian.org/debian/ stretch-updates/non-free Translation-en
 500 http://httpredir.debian.org/debian/ stretch-updates/main Translation-en
 500 http://httpredir.debian.org/debian/ stretch-updates/contrib Translation-en
 500 http://httpredir.debian.org/debian/ stretch-updates/non-free amd64 Packages
     release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=non-free
     origin httpredir.debian.org
 500 http://httpredir.debian.org/debian/ stretch-updates/contrib amd64 Packages
     release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=contrib
     origin httpredir.debian.org
 500 http://httpredir.debian.org/debian/ stretch-updates/main amd64 Packages
     release o=Debian,a=stable-updates,n=stretch-updates,l=Debian,c=main
     origin httpredir.debian.org
 500 http://httpredir.debian.org/debian/ stretch/non-free Translation-en
 500 http://httpredir.debian.org/debian/ stretch/main Translation-en
 500 http://httpredir.debian.org/debian/ stretch/contrib Translation-en
 500 http://httpredir.debian.org/debian/ stretch/non-free amd64 Packages
     release v=9.1,o=Debian,a=stable,n=stretch,l=Debian,c=non-free
     origin httpredir.debian.org
 500 http://httpredir.debian.org/debian/ stretch/contrib amd64 Packages
     release v=9.1,o=Debian,a=stable,n=stretch,l=Debian,c=contrib
     origin httpredir.debian.org
 500 http://httpredir.debian.org/debian/ stretch/main amd64 Packages
     release v=9.1,o=Debian,a=stable,n=stretch,l=Debian,c=main
     origin httpredir.debian.org
Pinned packages: