:> free -m
             total       used       free     shared    buffers     cached
Mem:           503        495          7          0          3        110
-/+ buffers/cache:        381        122
Swap:          956        473        483
:> murda firefox
:> free -m
             total       used       free     shared    buffers     cached
Mem:           503        405         98          0          3        111
-/+ buffers/cache:        289        214
Swap:          956        162        794