#!/bin/bash
#
# Displays details of loading and the user's own 
# running processes on a list of hosts.

# Find the directory containing this script.
basedir="$(dirname "$(realpath "$0" )" )"

# Get the list of hostnames:
source "$basedir/hosts.list"

echo " "
declare -a names
n=0
names=("" `echo "$usehosts" | cut -d, -f1 | xargs`)
nhosts="`echo "$usehosts" | wc -l`"
for n in `seq 1 $nhosts`
do
	echo "login $n: ${names[$n]}"
	tmpy="` ssh ${names[n]} ps -eo user,pcpu,rss `"
	psout[n]="` echo "$tmpy" | fgrep -v '%CPU' | sed -e 's/\.[0-9]*//g' `" 
	allcpu[n]="` echo "${psout[n]}" | awk '{ print $2 }' `"
	mycpu[n]="` echo "${psout[n]}" | grep "^$USER[\t ]" | awk '{ print $2 }' `"  
	allcpusum[n]="$(( 0`echo "${allcpu[n]}" | xargs -n1 | sed -e 's/^/+/' | xargs`+0 ))"	   
	mycpusum[n]="$(( 0`echo "${mycpu[n]}" | xargs -n1 | sed -e 's/^/+/' | xargs`+0 ))"
	allrss[n]="` echo "${psout[n]}" | awk '{ print $3 }' `"
	myrss[n]="` echo "${psout[n]}" | grep "^$USER[\t ]" | awk '{ print $3 }' `"  
	allrsssum[n]="$(( 0`echo "${allrss[n]}" | xargs -n1 | sed -e 's/^/+/' | xargs`+0 ))"
	myrsssum[n]="$(( 0`echo "${myrss[n]}" | xargs -n1 | sed -e 's/^/+/' | xargs`+0 ))"
done

echo " " 

echo '    HOST       mycpu%, allcpu%    myrssMB, allrssMB'
for n in `seq 1 $nhosts`
do
	printf "%10s:       %3d, %3d        %5d, %5d\n" ${names[n]} \
		${mycpusum[n]} ${allcpusum[n]} \
		$((myrsssum[n]/1024)) $((allrsssum[n]/1024))
done

echo " " 
echo "(note: the ps command and ssh login account for a few MB)"

echo " "