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Linux. how to find procceses which uses swap?

Summary by processes

#!/bin/bash
echo -n "" > /tmp/swapusage.output
for i in $( ps -e -o pid --no-headers); do
swapusage=$(grep Swap "/proc/$i/smaps"| grep -v '\W0 kB' | awk '{s+=$2} END {print s}')
if [ ! -z "$swapusage" ]; then  
cmd=$(ps -p $i -o user,cmd --no-headers | cut -d" " -f 1)
printf "%s\t%-40s\t\t\t%s\n" $i $cmd $swapusage >> /tmp/swapusage.output
fi ;
done
echo -e "PID\tCMD\t\t\t\t\t\t\t\tSWAP kB"
echo "--------------------------------------------------------------------------------"
sort -k 3 -n /tmp/swapusage.output

Top 10 segments in swap
ps ax | sed "s/^ *//" > /tmp/ps_ax.output 
for x in $(grep Swap /proc/[1-9]*/smaps | grep -v '\W0 kB' | tr -s ' ' | cut -d' ' -f-2 | sort -t' ' -k2 -n | tr -d ' ' | tail -20); do swapusage=$(echo $x | cut -d: -f3)pid=$(echo $x | cut -d/ -f3)procname=$(cat /tmp/ps_ax.output | grep "^$pid ")echo "============================" echo "Process   : $procname" echo "Swap usage: $swapusage kB"; done

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