Change swap space from Ubuntu 17.04 onwards

swapChange.sh

# Swap is a special area on your computer, which the operating system can use as additional RAM.
# Starting with Ubuntu 17.04, the swap partition was replaced by a swap file.
# The main advantage of the swap file is easy resizing.

# We’ll extend the swap space available in the /swapfile to 8 GB.

# Turn off all swap processes
sudo swapoff -a

# Resize the swap
sudo dd if=/dev/zero of=/swapfile bs=1G count=8
# if = input file
# of = output file
# bs = block size
# count = multiplier of blocks

# Make the file usable as swap
sudo mkswap /swapfile

# Activate the swap file
sudo swapon /swapfile
# Check the amount of swap available
grep SwapTotal /proc/meminfo