USING A SWAPFILE

Create swapfile. General store math is 1024 x GB desired is what you will want. So here is an example of creation of an 8G swapfile for usage on an 8GB RAM laptop to be able to suspend:
```
sudo dd if=/dev/zero of=/swapfile bs=1M count=8192
```
Fix permissions
```
sudo chmod 600 /swapfile
```
Have Linux format the swapfile as swapspace
```
sudo mkswap /swapfile-additional
```
Here is the /etc/fstab entry:
```
/swapfile swap swap    0   0
```
Now mount the swap area, run below given command.
```
sudo mount -a
```
Enable the swap area
```
sudo swapon -a
```
Check the number swap space mounted on your system
```
sudo swapon -s
```
To check how much is swap space available on system.Run below given command
```
free -m
```