[CentOS] df to get total disk usage on all filesystems?

[Stephen Harris]

On Mon, Aug 11, 2008 at 12:07:09PM -0700, Aleksey Tsalolikhin wrote:
> value.  I suggest using the -P switch to df, so you don't have to deal
> with multi-line output per filesystem.

Ugh, hasn't RedHat fixed that?  Sun have (for a long time) automatically
done this if stdout is not a terminal.

*sigh*.

So my previous mail should really be
  df -Pkl | awk '/^\/dev\// { avail += $3/1024 } END { printf("%d Mb used\n",avail)} '

-- 

rgds
Stephen