To add a swap file:
-
Determine the size of the new swap file and multiple by 1024 to determine the block size. For example, the block size of a 1024 swap file is 2G.
-
At a shell prompt as root, type the following command with count being equal to the desired block size:
|
dd if=/dev/zero of=/swapfile bs=1024 count=2M
|
-
Setup the swap file with the command:
-
To enable the swap file immediately but not automatically at boot time:
-
To enable it at boot time, edit /etc/fstab to include:
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none /swapfile swap defaults 0 0
|
The next time the system boots, it will enable the new swap file.
-
After adding the new swap file and enabling it, make sure it is enabled by viewing the output of the command cat /proc/swaps or free.
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