grep "${REPO_CHECK/\[arch=amd64\]/\\[arch=amd64\\]}" /etc/apt/sources.list > /dev/null 2>&1
if [ $? -ne 0 ]
then
+ need_packages_lw="software-properties-common apt-transport-https"
+ echo -e "Checking required packages: $need_packages_lw"
+ dpkg -l $need_packages_lw &>/dev/null \
+ || ! echo -e "One or several required packages are not installed. Updating apt cache requires root privileges." \
+ || sudo apt-get -q update \
+ || ! echo "failed to run apt-get update" \
+ || exit 1
+ dpkg -l $need_packages_lw &>/dev/null \
+ || ! echo -e "Installing $need_packages_lw requires root privileges." \
+ || sudo apt-get install -y $need_packages_lw \
+ || ! echo "failed to install $need_packages_lw" \
+ || exit 1
wget -qO - $REPOSITORY_BASE/$RELEASE/OSM%20ETSI%20Release%20Key.gpg | sudo apt-key add -
sudo DEBIAN_FRONTEND=noninteractive add-apt-repository -y "$1" && sudo DEBIAN_FRONTEND=noninteractive apt-get update
return 0