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How to create swap file to use as additional memory in VPS server

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December 16, 2021 at 9:28 pm #118

Murali
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Following are list of commands to create swap file to increase memory in VPS server using disk space
1. Execute below command
if the swap file size is 4 GB (128 MB x 32)
$ sudo dd if=/dev/zero of=/swapfile bs=128M count=32
2. Update the read and write permissions for the swap file:
$ sudo chmod 600 /swapfile
3. Set up a Linux swap area:
$ sudo mkswap /swapfile
4. Make the swap file available for immediate use by adding the swap file to swap space:
$ sudo swapon /swapfile
5. Verify that the procedure was successful:
$ sudo swapon -s
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
To check if the swap is active:
$> free -m

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