log_date=$(date +%Y%m%d -d "yesterday")
month_old=$(date +%Y%m%d -d "last month")

log_list=$(find /run/shm/minetest-debug | egrep moredebug.*txt | grep -v trepca)

for i in $log_list; do
        b=$(basename $i)
        mv $i "/backups/minetest/debug-logs/"$log_date"_"$b
        rm -f "/backups/minetest/debug-logs/"$month_old"_"$b
done