update and start ark survival evolved linux server

ark_server.sh

#!/bin/bash

# nedded mcrcon (https://github.com/Tiiffi/mcrcon.git)
# update the vars, and set down below #start_server the install dir

BASE_DIR=""
STEAM_CMD="path to steamcmd.sh"
RCON_PW=""
RCON_HOST="localhost"
RCON_PORT=""
# if you dont have MCRON in your PATH get it 
# https://github.com/Tiiffi/mcrcon.git
# git clone https://github.com/Tiiffi/mcrcon.git -b develop && cd mcron && make 
MCRON=""

# get installed version from file
test -f ${BASE_DIR}/installed_ark.txt
if [[ $? -eq 0 ]]; then
	installed_ark=$(cat ${BASE_DIR}/installed_ark.txt )
fi

# get latest ark update from steam
latest_ark=$(${BASE_DIR}/${STEAM_CMD} +login anonymous +app_info_update 1 +app_info_print 376030 +app_info_print 376030 +quit | grep "buildid" |uniq | awk '{print $2}' | tr -d \")

# check if latest not equals installed
 
if [[ ${installed_ark} -ne ${latest_ark} ]]; then
	${MCRON} -c -H ${RCON_HOST} -P ${RCON_PORT} -p ${RCON_PW} "broadcast New update available, server is restarting in 1 minute!" 
	sleep 60
	${MCRON} -c -H ${RCON_HOST} -P ${RCON_PORT} -p ${RCON_PW} "SaveWorld" 
	sleep 2
	${MCRON} -c -H ${RCON_HOST} -P ${RCON_PORT} -p ${RCON_PW} "DoExit" 
	sleep 2
	# check if server is stopped
	pgrep -f ShooterGameServer
	if [[ $? -eq 0 ]]; then
		ark_pid=$(pgrep -f ShooterGameServer)
		kill -15 ${ark_pid}
		sleep 5
		kill -9 ${ark_pid}
	fi
	# update server
	${BASE_DIR}/${STEAM_CMD} +login anonymous +app_update 376030 +quit

	echo ${latest_ark} > ${BASE_DIR}/installed_ark.txt

	#start_server 
	cd "install dir Steam/steamapps/common/ARK Survival Evolved Dedicated Server/ShooterGame/"

	Binaries/Linux/ShooterGameServer TheIsland?listen?bRawSockets  -server -log &
else
	exit 0;
fi

i know dirty, but it does the job..