Swap file §

• 📖 How to create a swap file on Linux

sudo dd if=/dev/zero of=/opt/swapfile bs=2048 count=1048576 
sudo mkswap /opt/swapfile
sudo chmod 600 /opt/swapfile
sudo swapon /opt/swapfile

then add it to fstab

/swapfile    none    swap    sw    0    0