sudo cp -n /etc/apt/sources.list /etc/apt/sources.list.osmc-eol-backup
sudo sed -i -e '/^[[:space:]]*#/! s@^\([[:space:]]*deb[[:space:]].*\(security\.debian\.org\|/debian-security\).*\)$@#OSMC-EOL \1@' /etc/apt/sources.list
sudo grep -c '^#OSMC-EOL' /etc/apt/sources.list
sudo apt-get update