how to delete swap file in ubuntu? -


i trying delete swapfile on digital ocean virtual server using instructions given here: https://www.digitalocean.com/community/questions/delete-swap-file

however, when type:

sudo rm /swapfile  

i following error:

rm: cannot remove `swapfile': operation not permitted 

i have changed permissions on swap file 777 , believe have root privileges. still cannot delete it.

run following commands:

sudo swapoff -a -v sudo rm /swapfile #back /etc/fstab: sudo cp /etc/fstab /etc/fstab.bak sudo sed -i '/\/swapfile/d' /etc/fstab 

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