Runtime informations - bash script

Shell Programming and Scripting
1

Hello,

I'm running a bash script and I'd like to get more accurate a runtime information then now.

So far I've been using this method:

STARTM=`date -u "+%s"`
.........
*script function....
.........
STOPM=`date -u "+%s"`
RUNTIMEM=`expr $STOPM - $STARTM`
if (($RUNTIMEM>59)); then
TTIMEM=`printf "%dm%ds\n" $((RUNTIMEM/60%60)) $((RUNTIMEM%60))`
else
TTIMEM=`printf "%ds\n" $((RUNTIMEM))`
fi

echo "Executing "script function" took: $TTIMEM"

However the script often runs under one second, so the result is 0s.

I'd like it display a more accurate runtime, best 0.015s or 1.123s and so on...

2

Hi.

You could try using "time":

time {
........
........
........
}
3

Thanks but that's not an option... I do not really echo the $TTIMEM var... that was just an example... I pass it to another script... and then my script goes on and does different stuff...

---------- Post updated at 11:54 AM ---------- Previous update was at 11:13 AM ----------

please delete this theard

4

Would this work perhaps (using GNU date)?:

#!/bin/ksh
res1=$(date +%s.%N)
sleep 1
res2=$(date +%s.%N)
echo "Start time: $res1"
echo "Stop time:  $res2"
echo "Elapsed:    $(( res2 - res1 ))"

$> ./test2
Start time: 1256415694.189522104
Stop time:  1256415695.193247576
Elapsed:    1.00372547202277929