Useful scripts for operating a Minecraft server on UNIX, written in SH for the Bash implementation.
Run using ./update-server.sh.
Install dependencies and the script (coreutil is for the sha1sum command):
$ sudo pacman -S curl jq coreutils
$ curl https://raw.githubusercontent.com/oscar230/minecraft-server-scripts/main/update-server.sh > update-server.sh
$ chmod +x update-server.sh
Setup for autorun at 09:00 every day using mcrcon (AUR):
$ sudo pacman -S cronie
$ sudo systemctl enable cronie.service --now
$ (crontab -l ; echo "0 9 * * * mcrcon -p PaSsWoRd -w 10 save-all stop && ~/update-server.sh && mcrcon -p PaSsWoRd start") | crontab -
Remember to enable rcon, if youre using a remote game server look for the -H option. You can edit your crontab using EDITOR=vim crontab -e.
Server systemd service
Based on the service written by dotStart and this article by Enauts Thinking. Remember to edit User=minecraft to reflect your current user... psst whoami. Place this service in /etc/systemd/system/minecraft.service, start and enable it with sudo systemctl daemon-reload && sudo systemctl enable minecraft.service --now.
[Unit]
Description=Minecraft Server
Wants=network-online.target
After=network-online.target
[Service]
User=minecraft
WorkingDirectory=/opt/minecraft
# You can customize the maximum amount of memory as well as the JVM flags here
ExecStart=/usr/bin/java -XX:+UseG1GC -Xmx2G -jar server.jar
ExecStop=/var/minecraft/mcrcon -p PaSsWoRd stop
# Restart the server when it is stopped or crashed
Restart=always
RestartSec=60
# Do not remove this!
StandardInput=null
[Install]
WantedBy=multi-user.target