/usr/include/seqan/chaining/ is in seqan-dev 1.3-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/seqan/chaining/chain_base.h
/usr/include/seqan/chaining/chain_generic.h
/usr/include/seqan/chaining/chain_meta_fragment.h
/usr/include/seqan/chaining/chain_point.h
/usr/include/seqan/chaining/chain_wrapper_point.h
/usr/include/seqan/chaining/chaining_generated_forwards.h
/usr/include/seqan/chaining/fragment.h
/usr/include/seqan/chaining/geom_distribution.h
/usr/include/seqan/chaining/range_max_tree.h
/usr/include/seqan/chaining/range_tree.h
/usr/include/seqan/chaining/rmt_base.h
/usr/include/seqan/chaining/rmt_common_algos.h
/usr/include/seqan/chaining/rmt_compl_algos.h
/usr/include/seqan/chaining/rmt_def_algos.h
/usr/include/seqan/chaining/rmt_skip_base_element.h
/usr/include/seqan/chaining/rmt_skip_element.h
/usr/include/seqan/chaining/rt_base.h
/usr/include/seqan/chaining/rt_common_algos.h
/usr/include/seqan/chaining/rt_impl.h
/usr/include/seqan/chaining/rt_skip_base_element.h
/usr/include/seqan/chaining/rt_skip_element.h
/usr/include/seqan/chaining/rt_sl_base.h
/usr/include/seqan/chaining/rt_sl_compl_algos.h
/usr/include/seqan/chaining/rt_sl_def_algos.h
/usr/include/seqan/chaining/rt_sl_impl.h
/usr/include/seqan/chaining/score_chain.h
/usr/include/seqan/chaining/score_chain_sop.h
/usr/include/seqan/chaining/score_manhattan.h
/usr/include/seqan/chaining/score_zero.h
/usr/include/seqan/chaining/skip_base_element.h
/usr/include/seqan/chaining/skip_element.h
/usr/include/seqan/chaining/skip_list.h
/usr/include/seqan/chaining/skip_list_base.h
/usr/include/seqan/chaining/skip_list_dynamic.h
/usr/include/seqan/chaining/skip_list_impl.h
/usr/include/seqan/chaining/skip_list_iterator.h
/usr/include/seqan/chaining/skip_list_type.h
/usr/include/seqan/chaining/skip_pool_alloc.h
/usr/include/seqan/chaining/tree_chain.h
/usr/include/seqan/chaining/tree_chain_sop.h
/usr/include/seqan/chaining/tree_chain_utils.h