setup_swap_file.sh

# /bin/bash

# Create a file that will be used for swap
sudo fallocate -l 1G /swapfile

# If `fallocate` is not installed or if you get an error message saying fallocate failed: `Operation not supported`
# You can use the following command to create the swap file
sudo dd if=/dev/zero of=/swapfile bs=1024 count=1048576

# Only the root user should be able to write and read the swap file. To set the correct permissions type
sudo chmod 600 /swapfile

# Use the mkswap utility to set up the file as Linux swap area
sudo mkswap /swapfile

# Enable the swap with the following command
sudo swapon /swapfile

# To make the change permanent open the /etc/fstab file and append the following line
```
# in file /etc/fstab
LABEL=SWAP_FILE swap defaults 0 0
```

# To verify that the swap is active, use either the swapon or the free command as shown below:
sudo swapon --show

```
NAME      TYPE  SIZE   USED PRIO
/swapfile file 1024M 507.4M   -1
```

sudo free -h
```
              total        used        free      shared  buff/cache   available
Mem:           488M        158M         83M        2.3M        246M        217M
Swap:          1.0G        506M        517M
```