backup.sh

#!/bin/bash
function rcon {
    [PATH_TO_TOOLS_DIR]/mcrcon -H 127.0.0.1 -P [RCON_PORT] -p [RCON_PASSWORD] "$1"
}
rcon "save-off"
rcon "save-all"
tar -cvpzf [PATH_TO_BACKUP_DIR]/server-$(date +%F_%R).tar.gz [PATH_TO_MINECRAFT_SERVER_DIR]
rcon "save-on"
## Delete older backups
[PATH_TO_BACKUP_DIR] -type f -mtime +7 -name '*.gz' -delete

##file paths and other details omitted for this public copy, just replace them with your information if you want to use this
##i have this set up on crontab to run every 6 hours
##enjoy :)