freebsd查看内存的一种简单方法

freebsd可几种查看内存整体使用率的方法，但都不够简洁。本文给出使用使用sh文件查看的方法：

curl如未安装的话请先安装curl。安装后下载freebsd-memory.sh

$ curl -O https://raw.githubusercontent.com/ocochard/myscripts/master/FreeBSD/freebsd-memory.sh  

然后运行该sh文件即可：

$ sh freebsd-memory.sh

查看到的信息如下

SYSTEM MEMORY INFORMATION:
mem_wire:        1113022464 (   1061MB) [ 27%] Wired: disabled for paging out
mem_active:  +    508321792 (    484MB) [ 12%] Active: recently referenced
mem_inactive:+    219136000 (    208MB) [  5%] Inactive: recently not referenced
mem_cache:   +            0 (      0MB) [  0%] Cached: almost avail. for allocation
mem_free:    +    482025472 (    459MB) [ 11%] Free: fully available for allocation
mem_gap_vm:  +   1794072576 (   1710MB) [ 43%] Memory gap: UNKNOWN
______________ ____________ ___________ ______
mem_all:     =   4116578304 (   3925MB) [100%] Total real memory managed
mem_gap_sys: +    137998336 (    131MB)        Memory gap: Kernel?!
______________ ____________ ___________
mem_phys:    =   4254576640 (   4057MB)        Total real memory available
mem_gap_hw:  +     40390656 (     38MB)        Memory gap: Segment Mappings?!
______________ ____________ ___________
mem_hw:      =   4294967296 (   4096MB)        Total real memory installed

SYSTEM MEMORY SUMMARY:
mem_used➊:        3593805824 (   3427MB) [ 83%] Logically used memory
mem_avail➋:   +    701161472 (    668MB) [ 16%] Logically available memory
______________ ____________ __________ _______
mem_total:   =   4294967296 (   4096MB) [100%] Logically total memory

• ➊ 已用内存
• ➋ 可用内存