sh-3.2# free -m
             total       used       free     shared    buffers     cached
Mem:           836        318        518          0         24        132
-/+ buffers/cache:        160        676
Swap:            0          0          0
sh-3.2# free -m
             total       used       free     shared    buffers     cached
Mem:           836        580        256          0         24        132
-/+ buffers/cache:        422        414
Swap:            0          0          0
sh-3.2# free -m
             total       used       free     shared    buffers     cached
Mem:           836        826          9          0         24        132
-/+ buffers/cache:        669        167
Swap:            0          0          0
sh-3.2# free -m
             total       used       free     shared    buffers     cached
Mem:           836        817         18          0          0         77
-/+ buffers/cache:        739         96
Swap:            0          0          0
sh-3.2# free -m
^[[A
^[[A^[[A
             total       used       free     shared    buffers     cached
Mem:           836        818         18          0          0         68
-/+ buffers/cache:        749         87
Swap:            0          0          0