sibarra@servidor:~$ free
             total       used       free     shared    buffers     cached
Mem:       2076156    1711888     364268          0     397308     760016
-/+ buffers/cache:     554564    1521592
Swap:       987988        124     987864
sibarra@servidor:~$ vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
 0  0    124 364332 397308 760024    0    0    12    12   23    9  3  1 96  1