Monitor memory usage in VPS

mem.sh

#! /bin/bash
# https://gist.github.com/fwolf/5856230


#ps aux --width 80 | sort -nrk +6 | head -n 15
# bsdtime is shorter than cputime, hh:mm:ss vs MMM:SS
ps -eo 'user,pid,%cpu,%mem,rss,vsz,stime,bsdtime,s,cmd' --sort '-rss,-vsz' --width 80 | head -n 16
echo


#ps auxm > /tmp/mem.sh
top -b -n1 > /tmp/mem.sh

M1=`cat /tmp/mem.sh | head -n4 | tail -n1`
echo $M1

M1=`cat /tmp/mem.sh | grep php-fpm | awk '{if (match($6, "m")) {gsub("m", "", $6); I += $6 * 1024} else {I += $6}} END {print I}'`
M2=`cat /tmp/mem.sh | grep php-fpm | wc -l`
echo FastCGI:	$M2 process,	"$M1"k memory.

M1=`cat /tmp/mem.sh | grep nginx | awk '{if (match($6, "m")) {gsub("m", "", $6); I += $6 * 1024} else {I += $6}} END {print I}'`
M2=`cat /tmp/mem.sh | grep nginx | wc -l`
echo Nginx:	$M2 process,	"$M1"k memory.

rm /tmp/mem.sh


echo
free -h | grep -v Mem | grep -v Swap