How to check for Spectre / Meltdown vulnerability in Linux Mint / Ubuntu

Launch your terminal and type in the following commands

mkdir ~/sm
cd ~/sm
wget https://raw.githubusercontent.com/speed47/spectre-meltdown-checker/master/spectre-meltdown-checker.sh
chmod +x ./spectre-meltdown-checker.sh
sudo ./spectre-meltdown-checker.sh

In case your system is ok and is not vulnerable you'll get a similar screen like this in your terminal