Create a swap file on Manjaro or Arch

.sh

# Create the file itself
sudo dd if=/dev/zero of=/swapfile bs=1M count=4096 status=progress

# Only root should be able to read and write
sudo chmod 600 /swapfile

# Format the swap file
sudo mkswap /swapfile

# Enable the swap
sudo swapon /swapfile

# Add entry in /etc/fstab for auto start
sudo bash -c "echo /swapfile none swap defaults 0 0 >> /etc/fstab"

saved for future use cases for potato machines 👯‍♀️