/usr/share/crawl/settings/ is in crawl-common 2:0.10.3-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/crawl/settings/0.9_monster_glyphs.txt
/usr/share/crawl/settings/034_command_keys.txt
/usr/share/crawl/settings/034_monster_glyphs.txt
/usr/share/crawl/settings/052_monster_glyphs.txt
/usr/share/crawl/settings/060_monster_glyphs.txt
/usr/share/crawl/settings/071_monster_glyphs.txt
/usr/share/crawl/settings/080_monster_glyphs.txt
/usr/share/crawl/settings/advanced_optioneering.txt
/usr/share/crawl/settings/autopickup_exceptions.txt
/usr/share/crawl/settings/dvorak_command_keys.txt
/usr/share/crawl/settings/food_colouring.txt
/usr/share/crawl/settings/init.txt
/usr/share/crawl/settings/menu_colours.txt
/usr/share/crawl/settings/messages.txt
/usr/share/crawl/settings/no_vi_command_keys.txt
/usr/share/crawl/settings/runrest_messages.txt
/usr/share/crawl/settings/standard_colours.txt
/usr/share/crawl/settings/tiles_options.txt