Linux以GB显示内存大小
[emailprotected]:~$ free -g
total used free shared buffers cached
Mem: 2 1 1 0 0 0
-/+ buffers/cache: 0 2
Swap: 3 0 3
[emailprotected]:~$ free --giga
total used free shared buffers cached
Mem: 2 1 1 0 0 0
-/+ buffers/cache: 0 2
Swap: 3 0 3
原文：/you23hai45/article/details/44316835
