How to I make my program release memory?

[wavic]

Hello!

# First, create a file
sudo dd if=/dev/zero of=/path/swap.img bs=2048 count=1M

#Format it
sudo mkswap /path/swap.img

# Open and add an entry to /etc/fstab file like this. As root. Save it.
/path/swap.img swap swap sw    0   0

# Make it active
sudo swapon /path/swap.img

This will create 2GB swap file. 

To open /etc/fstab as root into the default editor

sudo xdg-open /etc/fstab