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From: Mike McClain on 19 Mar 2010 15:40
On Fri, Mar 19, 2010 at 06:45:15PM +0100, Sven Joachim wrote:
> On 2010-03-19 18:19 +0100, Mike McClain wrote:
>
> > I've written a function to print elapsed time similar to /usr/bin/time
> > but can be called at the beginning and end of a script from within
> > the script. Occasionally I get an error: '8-08: value too great for base'
> > It's caused by the difference in these 2 command strings but I can't for
> > the life of me see what's going on.
>
> Apparently bash is treating the number as octal because it starts with a
> leading 0.
>
> Sven

In one case but not the other?
What makes them treated differently?
Mike
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From: Paul E Condon on 19 Mar 2010 15:50
On 20100319_101928, Mike McClain wrote:
> I've written a function to print elapsed time similar to /usr/bin/time
> but can be called at the beginning and end of a script from within
> the script. Occasionally I get an error: '8-08: value too great for base'
> It's caused by the difference in these 2 command strings but I can't for
> the life of me see what's going on.
>
> now='09:07:16'; startHr=${now%%:*}; startHR=${startHr#*0}; echo $startHr;
> 09
>
> str=09; str=${str#*0}; echo $str;
> 9

Try:

bgn=$(date +%s)
sleep 7
end=$(date +%s)
echo "elapsed seconds = " $(( end - bgn ))

Play with values other than '7'.

To actually use in a script, replace the sleep command by whatever you
want to measure the elapsed time for.

Expressing elapsed time as HH:MM:SS requires a little more work. To
write that script, use / for divide operator and % for remainder operator,
like in C.

--
Paul E Condon
pecondon(a)mesanetworks.net


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From: Chris Jackson on 19 Mar 2010 16:20
Paul E Condon wrote:

> Try:
>
> bgn=$(date +%s)
> sleep 7
> end=$(date +%s)
> echo "elapsed seconds = " $(( end - bgn ))


You might also want to experiment with:

ps h -o etime $$

as long as you're happy with it only running under gnu. Prints the
elapsed time for the shell.

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Chris Jackson
Shadowcat Systems Ltd.


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From: Josep M. on 29 Mar 2010 08:40
Hello.

I found these somewhere time ago. check if is what You need:





function timer()
{
if [[ $# -eq 0 ]]; then
echo $(date '+%s')
else
local stime=$1
etime=$(date '+%s')

if [[ -z "$stime" ]]; then stime=$etime; fi

dt=$((etime - stime))
ds=$((dt % 60))
dm=$(((dt / 60) % 60))
dh=$((dt / 3600))
printf '%d:%02d:%02d' $dh $dm $ds
fi
}


This is before the command

t=$(timer)

and this is after the command

printf 'Elapsed time: %s\n' $(timer $t)



example

t=$(timer)

copy /dev/null /dev/zero

printf 'Elapsed time: %s\n' $(timer $t)



Greetings
Josep

El vie, 19-03-2010 a las 10:19 -0700, Mike McClain escribió:
> I've written a function to print elapsed time similar to /usr/bin/time
> but can be called at the beginning and end of a script from within
> the script. Occasionally I get an error: '8-08: value too great for base'
> It's caused by the difference in these 2 command strings but I can't for
> the life of me see what's going on.
>
> now='09:07:16'; startHr=${now%%:*}; startHR=${startHr#*0}; echo $startHr;
> 09
>
> str=09; str=${str#*0}; echo $str;
> 9
>
> Thanks,
> Mike
> --
> Satisfied user of Linux since 1997.
> O< ascii ribbon campaign - stop html mail - www.asciiribbon.org
>
>



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From: Mike McClain on 29 Mar 2010 19:40
Hi Josep,

On Mon, Mar 29, 2010 at 02:28:20PM +0200, Josep M. wrote:
>
> I found these somewhere time ago. check if is what You need:
>
<snip>

Thanks a lot. Though my error was pointed out as a typo and corrected
a while back your solution using " date '+%s' " is much more elegant
than what I had done.

Mike

PS: Since I posted to and read the list you needn't email me direct.
MM
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