cat zabbixhosts 
Helpdesk-fd:Server_Helpdesk
Knowledge-fd:Server_Knowledge
BaculaServer-fd:Server_Bacula
Zabbix-fd:Server_Zabbix_1.4.2

client=$(tail -n 38 /var/lib/bacula/log | grep -m 1 -F "Client" | awk -F" " '{ print $2; }')
echo Client is $client
echo

# get hostname from the Hostsfile
ZABBIX_HOST=`grep "[$client]" $ZABBIX_HOSTSFILE`

if [ $? -eq 0 ]; then
        hostname=`echo "$ZABBIX_HOST" | cut -f2 -d:`
else
        hostname=""
fi
echo Hostname is $hostname

./bacula2zabbix.sh 
Client is "BaculaServer-fd"

Hostname is Server_Helpdesk Server_Knowledge Server_Bacula Server_Zabbix_1.4.2