Check the usage of Memory (Ram)
// By megabyte
free -m
// By gigabyte
free -hCheck the usage of Hard drive
// By megabyte
df -Tm
// By gigabyte
df -ThInstall Swap File
// Change the parameter {{X}} to the number of Gb that You want to allocate for the Swap
sudo fallocate -l {{X}}G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile