free displays the total amount of free and used physical and swap memory in
the system. In your case "free -g" it showing you how much memory you are
using right now in gigabits.
On Tue, Dec 18, 2012 at 11:52 AM, AshikAli.m <ashikali.m@xxxxxxxxx> wrote:
> Hi,
>
> I have two 64 bit cent Os machine. I googled that in linux always show
> entire memory as used. But below showing only 1 GB detected.
>
>
> *Machine 1 :*
> i) It has 31 GB of ram.
>
> [root@machine1]# free -g
> total used free shared buffers
> cached
> Mem: 31 1 30 0 0 0
> -/+ buffers/cache: 0 30
> Swap: 49 0 49
> ------------------------------------------
>
> *Machine 2 :*
> i)It has 11 GB of ram.
>
> [root@machine2]# free -g
> total used free shared buffers
> cached
> Mem: 11 11 0 0 0 9
> -/+ buffers/cache: 1 10
> Swap: 49 0 49
>
>
> Could you please anyone can explain why ?
>
>
> Thanks,
> Ashik
> -*
> *
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