get memory utilization of corosync

corss.sh

#!/bin/bash

print_usage() {
	echo "$0 - Get memory utilization of corosync"
	echo ""
	echo "$0 [options]"
	echo "Options:"
	echo "-h, --help    show help"
	echo "-b, --byte    print rss in bytes (could get printed in scientific notation)"
	echo "-k, --kbyte    print rss in bytes (could get printed in scientific notation)"
	echo ""
	echo "Specifying no flags prints the rss value in human readable format"
}

kbytes=$(grep VmRSS /proc/$(pidof corosync)/status |  grep kB | awk '{print $2}')
if [ $# -eq 0 ]
then
	echo $kbytes | awk '{ split( "KB MB GB" , v ); s=1; while( $1>1024 ){ $1/=1024; s++ } print int($1), v[s] }'
else
	case "$1" in
		-h|--help)
			print_usage
			;;
		-b|byte)
			echo $kbytes | awk '{print $1*1024}'
			;;
		-k|kbyte)
			echo $kbytes
			;;
		*)
			echo "Unknown option $1"
			print_usage
			;;
	esac
fi