free commands gives the amount of free memory in two forms: completely free memory (the
Mem line) and disposable memory used for caches and buffers (the
-/+ buffers/cache line):
-bash-3.2$ free -m total used free shared buffers cached Mem: 16057 15173 884 0 17 2520 -/+ buffers/cache: 12635 3422 Swap: 12287 4937 7350
In this example, there are 884 MB of free memory excluding buffers and cache, and 3422 MB of free memory including buffers and cache.
How can I get the second measurement (free memory, including buffers and cache) in