ubuntu@ubuntu:~$ free
             total       used       free     shared    buffers     cached
Mem:       1932828    1798084     134744     353868     204344     855588
-/+ buffers/cache:     738152    1194676
Swap:      3960828       7584    3953244
ubuntu@ubuntu:~$ sudo lshw -C Memory
  *-memory                
       description: System memory
       physical id: 0
       size: 1887MiB
ubuntu@ubuntu:~$