PHP Code:
:~# free -m
total used free shared buffers cached
Mem: 15745 1516 14229 32 31 402
-/+ buffers/cache: 1081 14663
Swap: 90 0 90
:~# uname -a
Linux spartaclan 3.13.0-96-generic #143-Ubuntu SMP Mon Aug 29 20:15:20 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux