SwapFile Creation for Ubuntu and Debian

### Lets Check that swap file is already created or not
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## Use F10 Key from your keyboard to quit the htop screen!

## Lets create Swap file

## Use only one section from below 01 and 02 sections (1GB, 2GB)

## 01 Section - For 1GB Swap, use below commands (Section 01)
sudo fallocate -l 1G /swapfile
sudo dd if=/dev/zero of=/swapfile bs=1024 count=1048576

## 02 Section - For 2GB Swap, use below commands (Section 02)
sudo fallocate -l 2G /swapfile
sudo dd if=/dev/zero of=/swapfile bs=2048 count=1048576

## For over 4GB or larger Physical RAM installed machine, I don't recommend using swap file, unless you do know what you are doing!!

sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile

### Lets edit FStab so it will be avaialiable after reboot
sudo nano /etc/fstab

### Just add below line end of this file
/swapfile swap swap defaults 0 0
## Now save the file and exit

### Lets mount
sudo mount -a

## Now verfiy the swap file
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### Increase or Decrease the swap file later...
sudo swapoff -v /swapfile
## then follow the step from start!

## Completely remove the swap file
sudo swapoff -v /swapfile
sudo rm /swapfile
# Remove the fstab text that looks alike below text
/swapfile swap swap defaults 0 0
# Now save the file and exit
sudo mount -a
# Now verfiy the swap file
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NOTE: This guide should work with almost all Ubuntu and Debian based OS versions...
      
      This should works with all kind of VPS or Dedicated servers provider worlwide...
      EX: Amazon Ec2, Amazon Lightsail, DigitalOcean, Vultr, Alibaba Cloud, Google Cloud etc...

DISCLAIMER: I'm not responsible if you brake anything from the server using this guide! Use this guide at YOUR OWN RISK...