[root@rhel6 ~]# free -m
             total       used       free     shared    buffers     cached
Mem:          9892       9537        354          0         71        884
-/+ buffers/cache:       8581       1310
Swap:          767 1759218592     116869

[root@bb14 blackboard]# free -g|grep Swap
Swap:            0 1717986906        114

[root@bb14 blackboard]# free -h |grep Swap
Swap:         767M       767M       114G

[root@rhel6 ~]# swapoff -a
[root@rhel6 ~]# free -m
             total       used       free     shared    buffers     cached
Mem:          9892       9760        131          0         45        638
-/+ buffers/cache:       9076        815
Swap:            0 1759218592     116814

[root@bb14 blackboard]# cat /proc/meminfo|grep Swap
SwapCached:            0 kB
SwapTotal:        786428 kB
SwapFree:       120404008 kB