script to restart all background processes including dynamodb, sqs, redis, and elasticsearch

background.sh

#!/bin/sh

function killport {
	while true; do
		PID=$(lsof -i TCP:$1 | grep LISTEN | awk '{print $2}')

		exec 3>&2          # 3 is now a copy of 2
		exec 2> /dev/null  # 2 now points to /dev/null
		kill $PID
		kill -0 $PID
		RES=$?
		exec 2>&3          # restore stderr to saved
		exec 3>&-          # close saved version

		if [ $RES -ne 0 ]; then
			break
		fi
		sleep 1
	done
}

killport 6379
redis-server /usr/local/etc/redis.conf 2>&1 > /dev/null &

killport 9200
elasticsearch --network.port=9200 2>&1 > /dev/null &
killport 9201
elasticsearch --network.port=9201 2>&1 > /dev/null &

DYNAMODB_DIR=/usr/local/dynamodb_local_2015-07-16_1.0
killport 8000
java -Djava.library.path=${DYNAMODB_DIR}/DynamoDBLocal_lib -jar ${DYNAMODB_DIR}/DynamoDBLocal.jar -dbPath $DYNAMODB_DIR -port 8000 2>&1 > /dev/null &

killport 4568
fake_sqs --bind=127.0.0.1 --port=4568 2>&1 > /dev/null &
killport 4569
fake_sqs --bind=127.0.0.1 --port=4569 2>&1 > /dev/null &