Get Swap Usage Information in Linux

GetSwapUsage.sh

#!/bin/bash
# Get current swap usage for all running processes
# Courtesy By : Erik Ljungstrom 27/05/2011
# Midified By : Mansur Ul Hasan
# Email : [email protected], [email protected]

SUM=0
OVERALL=0
for DIR in `find /proc/ -maxdepth 1 -type d | egrep "^/proc/[0-9]"` ; do
PID=`echo $DIR | cut -d / -f 3`
PROGNAME=`ps -p $PID -o comm --no-headers`
for SWAP in `grep Swap $DIR/smaps 2>/dev/null| awk '{ print $2 }'`
do
let SUM=$SUM+$SWAP
done
echo "PID=$PID - Swap used: $SUM - ($PROGNAME )"
let OVERALL=$OVERALL+$SUM
SUM=0

done
echo "Overall swap used: $OVERALL"