#!/bin/bash

    # Edit to your liking
    MODS="/some/path/minetest/mods/minetest"
    DEFMODS="/some/path/minetest/games/minetest_game/mods"
    DEST="/some/path/minetest/media"

    # Uncomment next two lines if you want to clean out media folder first
    #rm -Rf "$DEST"
    #mkdir "$DEST"

    # Copy files over
    find "$MODS" -type f -name '*.png' -exec cp {} "$DEST" \;
    find "$MODS" -type f -name '*.ogg' -exec cp {} "$DEST" \;
    find "$MODS" -type f -name '*.xcf' -exec cp {} "$DEST" \;
    find "$MODS" -type f -name '*.blend' -exec cp {} "$DEST" \;
    find "$MODS" -type f -name '*.x' -exec cp {} "$DEST" \;

    find "$DEFMODS" -type f -name '*.png' -exec cp {} "$DEST" \;
    find "$DEFMODS" -type f -name '*.ogg' -exec cp {} "$DEST" \;
    find "$DEFMODS" -type f -name '*.xcf' -exec cp {} "$DEST" \;
    find "$DEFMODS" -type f -name '*.blend' -exec cp {} "$DEST" \;
    find "$DEFMODS" -type f -name '*.x' -exec cp {} "$DEST" \;