[vdr] Re: AW: Free Space on Disk

[Sergei Haller <Sergei.Haller@math.uni-giessen.de>]

On Mon, 10 Dec 2001, Rienecker, Fa. Evenio, ITS P, M wrote:

CR> Hi,
CR> try using the 'expr' command.
CR> You can write shell scripts like
CR>
CR> i=`expr $j + $k`
CR>
CR> This is a bit awkward and painfully slow if you add up a lot of values, but it works. Look at the man pages.
CR>
CR>
CR> Christian.

there is also a slightly faster one (at least in bash):

# k=1; time while [ $k -lt 10000 ] ; do k=$(( $k + 1 )) ; done;

real    0m1.355s
user    0m0.870s
sys     0m0.010s

# k=1; time while [ $k -lt 10000 ] ; do k=`expr $k + 1` ; done;

real    1m25.977s
user    0m24.130s
sys     0m30.190s

c ya
        Sergei

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