File: memused

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#!/bin/bash

"$@" &

cd /proc/$!

max=0
while [ -f status ]
do
sleep 0.1
if [ -f status ]
then
    mem=`cat status | grep VmHWM | tr -s [:blank:] | cut -d ' ' -f 2  | sed 's/[^0-9]*//g'`
    if [ "0$mem" -gt "0$max" ]
    then
        max=$mem
    fi
fi;
done

echo "maximal memory used ( kilobyte(s) (K / Kb))" $max