# Run this script in a local node to remove an user as specified in /share/apps/configrepo/users_data/newuser.dat

username=$(cat /share/apps/configrepo/users_data/newuser.dat | awk '{print $2}')
frontend=$(i=192.168.1.10; command='hostname'; ssh -X -Y -oStrictHostKeyChecking=no $i "$command")
currenthost=$(hostname)

#echo username: $username
#pgrep -u $username | sudo xargs kill -9

processes=$(pgrep -u $username)
#echo 'processes before = ' $processes

if [[ -n "$processes" ]]
then
	echo To kill the following processes in $HOSTNAME occupied by $username
	echo $processes
	pgrep -u $username | sudo xargs kill -9
	echo processes killed
else
	echo pregrep -u $username: no precesses in $HOSTNAME
fi

###########################################################
if [[ $currenthost =~ $frontend ]]
then # do this in frontend
#		echo $currenthost is the same as $frontend. 
		echo To usedel $username in $HOSTNAME
		userdel -Z -r -f $username
		echo To remove $username from /etc/exports in $currenthost
		cp /etc/exports /etc/exports.backup.$RANDOM
		grep -v "$username" /etc/exports >  temp; mv temp /etc/exports	
else # do this in nodes 
#		echo $currenthost is not the same as $frontend. 		
		echo To usedel $username in $HOSTNAME
		userdel -Z -r -f $username
		echo To remove $username from /etc/fstab in $currenthost
		cp /etc/fstab /etc/fstab.backup.$RANDOM
		grep -v "$username" /etc/fstab >  temp; mv temp /etc/fstab
		echo '/etc/fstab modified for' $username
fi