deb http://debian.mc.vanderbilt.edu/ubuntu/ xenial main restricted universe multiverse
deb http://debian.mc.vanderbilt.edu/ubuntu/ xenial-updates main restricted universe multiverse
deb http://debian.mc.vanderbilt.edu/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://debian.mc.vanderbilt.edu/ubuntu/ xenial main restricted universe multiverse
deb-src http://debian.mc.vanderbilt.edu/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://debian.mc.vanderbilt.edu/ubuntu/ xenial-backports main restricted universe multiverse
# us.archive.ubuntu.com

deb http://security.ubuntu.com/ubuntu xenial-security main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted universe multiverse

# deb http://debian.mc.vanderbilt.edu/R/CRAN/bin/linux/ubuntu xenial/
deb http://debian.mc.vanderbilt.edu/R/CRAN/bin/linux/ubuntu wily/