Create 4G Swap For Linux

gistfile1.txt

#Create 4G swap (128M*32)
sudo dd if=/dev/zero of=/swapfile bs=128M count=32
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile


6.    Enable the swap file at boot time by editing the /etc/fstab file.

Open the file in the editor:

$ sudo vi /etc/fstab
Add the following new line at the end of the file, save the file, and then exit:

/swapfile swap swap defaults 0 0