Worldbackup
The world files are in
/home/minetest/minetest4/worlds/pineapple_server_3/
Every so often (once a week or so, unless no world changes have occurred), we shutdown the minetest program, and run the following commands:
cd /home/minetest/minetest4/worlds/
rm -rf pineapple_server_3_backup_2
cp pineapple_server_3_backup_1 pineapple_server_3_backup_2
rm -rf pineapple_server_3_backup_1
cp pineapple_server_3 pineapple_server_3_backup_1
We should also backup the world off-server occasionally