Minecraft server tmux/cron scripts

crontab

0 8 * * * $HOME/scripts/restart.sh
15 8 * * * $HOME/scripts/fullrender.sh

fullrender.sh

#!/bin/bash

echo "Running fullrender.sh: $(date)" >> ~/server-log.txt

# Check if existing session is running
/usr/bin/tmux has-session -t minecraft 2>/dev/null
if [ $? == 0 ]; then
	echo "fullrender.sh: Executing render job..." >> ~/server-log.txt
	/usr/bin/tmux send-keys -t minecraft "dynmap fullrender world" Enter
	sleep 3
	/usr/bin/tmux send-keys -t minecraft "dynmap fullrender world_nether" Enter
	sleep 3
	# /usr/bin/tmux send-keys -t minecraft "dynmap fullrender world_the_end" Enter
	# sleep 3
fi

# Start a new session
echo "fullrender.sh: Finished!" >> ~/server-log.txt

restart.sh

#!/bin/bash

echo "Running restart.sh: $(date)" >> ~/server-log.txt

# Check if existing session is running
/usr/bin/tmux has-session -t minecraft 2>/dev/null
if [ $? == 0 ]; then
	echo "restart.sh: Killing previous session..." >> ~/server-log.txt
	/usr/bin/tmux send-keys -t minecraft "say Restarting server in 1 minute..." Enter
	sleep 50
	/usr/bin/tmux send-keys -t minecraft "say Restarting server in 10 seconds..." Enter
	sleep 10
	/usr/bin/tmux send-keys -t minecraft "stop" Enter
	sleep 10
	/usr/bin/tmux kill-session -t minecraft
fi

# Start a new session
echo "restart.sh: Starting new session..." >> ~/server-log.txt
/usr/bin/tmux new-session -s minecraft -d ~/scripts/runserver.sh

runserver.sh

#!/bin/bash
cd ~
while true
do
	# Flags from mcflags.emc.gs
	/usr/bin/java -Xms2560M -Xmx2560M \
		-XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:MaxGCPauseMillis=100 \
		-XX:+DisableExplicitGC -XX:TargetSurvivorRatio=90 \
		-XX:G1NewSizePercent=50 -XX:G1MaxNewSizePercent=80 \
		-XX:G1MixedGCLiveThresholdPercent=35 -XX:+AlwaysPreTouch \
		-XX:+ParallelRefProcEnabled \
		-jar server.jar nogui
	echo "Server process interrupted. Press Ctr-C to stop..."
	sleep 5
	echo "Restarting..."
done
echo "Exited minecraft server."