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." \
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." \