$ free
total used free shared buffers cached
Mem: 1555176 1513788 41388 0 302236 715336
-/+ buffers/cache: 496216 1058960
Swap: 976552 23672 952880
The Mem line:
total－size of the total memory: 1555176Byte
used－memory that has been used: 1513788Byte
free －memory that hasn't been used: 41388Byte
shared － abandoned currently：is always 0
buffers － buffer memory: 302236Byte
cache － cache memory: 715336Byte
The relationship: total (1555176) = used (1513788) ＋ free (41388)
The second part of (-/+buffers/cache):
(- /buffers/cache) used memory: 496216 (=used-buffers-cached)
(+/buffers/cache) free memory: 1058960 (=free + buffers + cached)
Perhaps you have already known this.Yes,The -/buffers/cache reflects the size of memory that the programe really have used , and +/buffers/cache reflect the total size of memory that can be misappropriated.
total used free shared buffers cached
Mem: 1555176 1513788 41388 0 302236 715336
-/+ buffers/cache: 496216 1058960
Swap: 976552 23672 952880
The Mem line:
total－size of the total memory: 1555176Byte
used－memory that has been used: 1513788Byte
free －memory that hasn't been used: 41388Byte
shared － abandoned currently：is always 0
buffers － buffer memory: 302236Byte
cache － cache memory: 715336Byte
The relationship: total (1555176) = used (1513788) ＋ free (41388)
The second part of (-/+buffers/cache):
(- /buffers/cache) used memory: 496216 (=used-buffers-cached)
(+/buffers/cache) free memory: 1058960 (=free + buffers + cached)
Perhaps you have already known this.Yes,The -/buffers/cache reflects the size of memory that the programe really have used , and +/buffers/cache reflect the total size of memory that can be misappropriated.
Reference URI:https://ubuntu-sky.blogspot.com/2009/04/explain-of-command-free.html
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