Linux显示所有输出域自动缩小到最短三数字单元和显示单元的打印
youhaidong@youhaidong-ThinkPad-Edge-E545:~$ free -h
total used free shared buffers cached
Mem: 3.0G 1.4G 1.6G 7.1M 62M 621M
-/+ buffers/cache: 715M 2.3G
Swap: 3.8G 0B 3.8G
youhaidong@youhaidong-ThinkPad-Edge-E545:~$ free --human
total used free shared buffers cached
Mem: 3.0G 1.5G 1.5G 7.4M 64M 630M
-/+ buffers/cache: 839M 2.1G
Swap: 3.8G 0B 3.8G
Linux显示所有输出域自动缩小到最短三数字单元和显示单元的打印
原文：http://blog.csdn.net/you23hai45/article/details/44357259