$ sudo dd if=/dev/zero of=/swapfile bs=1M count=1024 #增加1G的SWAP进去
$ sudo mkswap /swapfile
$ sudo swapon /swapfile
$ free
total used free shared buffers cached
Mem: 608476 601432 7044 0 824 88752
-/+ buffers/cache: 511856 96620
Swap: 1048572 0 1048572
宝剑锋从磨砺出,梅花香自苦寒来.