Re: time doesn't behave

[Francis Montagnac]

In article <9akfos$gnu$1@porthos.nl.uu.net>,
 "EHV-00" <test@philips.com> writes:
>Dear all,

>I am trying to 'time' a process and grep the output.
>For some reason the 'time' is not behaving correctly:

>===>
>eelco@ns6:~> time namp localhost 2>&1 | grep real
>
>real 0m0.455s
>user 0m0.100s
>sys 0m0.190s

You should use a subshell to do that. Try:

(time namp localhost) 2>&1 | grep real

I use the following function to capture the realtime spent by a process:

realtime() {
    {
        ( TIMEFORMAT="%R"; time { { "$@"; } >&4 2>&1 ; } ) 2>&1
    } 4>&2
}

then just say:

var=$(realtime namp localhost)

to store the real time spent in var.

-- 
Francis.Montagnac@sophia.inria.fr, Tel: (33)04 92 38 79 11
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