Linux build Swap partition file and automatically mount
purpose：Establish a 2G size of the swap partition，And automatically mount when the system boots。
System Environment：RedHat53
1. dd if=/dev/zero of=/swapfile bs=1k count=2048000
2. mkswap /swapfile
3. swapon /swapfile
4. Modify / etc / fstab to automatically mount at startup：
Add the following sentence in the / etc / fstab in：
2. mkswap /swapfile
3. swapon /swapfile
4. Modify / etc / fstab to automatically mount at startup：
Add the following sentence in the / etc / fstab in：
| /swapfile swap swap defaults 0 0 |
5. Get!
