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CentOS 7 Virtual RAM
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| # In this case, I use 2G swapfile or virtual RAM | |
| sudo dd if=/dev/zero of=/swapfile count=1024 bs=1MiB | |
| sudo chmod 600 /swapfile | |
| sudo mkswap /swapfile | |
| sudo swapon /swapfile | |
| sudo sh -c 'echo "/swapfile none swap sw 0 0" >> /etc/fstab' |
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