cat /proc/meminfo 
MemTotal:      1026292 kB
MemFree:         14052 kB
Buffers:          2188 kB
Cached:         754680 kB
SwapCached:        252 kB
Active:         301096 kB
Inactive:       656488 kB
SwapTotal:      971924 kB
SwapFree:       971632 kB
Dirty:           34520 kB