#!/bin/sh

echo -e "PID\tVSZ\tRSS\tShared"
for pid in $@; do
    smaps="/proc/$pid/smaps"
    vsz=$(grep -E "^Size" $smaps | awk 'BEGIN{ num = 0 } { num += $2 } END{ print num }')
    rss=$(grep -E "^Rss" $smaps | awk 'BEGIN{ num = 0 } { num += $2 } END{ print num }')
    shared=$(grep -E "^Shared" $smaps | awk 'BEGIN{ num = 0 } { num += $2 } END{ print num }')
    percent=$(echo "scale=2; ($shared / $rss) * 100" | bc | cut -d "." -f 1)
    echo -e "$pid\t${vsz}KB\t${rss}KB\t${shared}KB(${percent}%)"
done