[ ! -d /usr/local/bin ] && echo "/usr/local/bin does not exist" && exit 1
[ ! -O /usr/local/bin ] && SUDO_MAYBE=sudo
$SUDO_MAYBE curl -fso /usr/local/bin/node-install https://raw.githubusercontent.com/mafintosh/node-install/master/node-install
$SUDO_MAYBE chmod +x /usr/local/bin/node-install