/usr/lib/x86_64-linux-gnu/ is in libradare2-dev 2.3.0+dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/libr2.so
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/r_anal.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_asm.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_bin.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_bp.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_config.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_cons.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_core.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_crypto.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_debug.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_egg.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_flag.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_fs.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_hash.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_io.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_lang.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_magic.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_parse.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_reg.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_search.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_socket.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_syscall.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/r_util.pc
/usr/lib/x86_64-linux-gnu/libr_anal.so
/usr/lib/x86_64-linux-gnu/libr_asm.so
/usr/lib/x86_64-linux-gnu/libr_bin.so
/usr/lib/x86_64-linux-gnu/libr_bp.so
/usr/lib/x86_64-linux-gnu/libr_config.so
/usr/lib/x86_64-linux-gnu/libr_cons.so
/usr/lib/x86_64-linux-gnu/libr_core.so
/usr/lib/x86_64-linux-gnu/libr_crypto.so
/usr/lib/x86_64-linux-gnu/libr_debug.so
/usr/lib/x86_64-linux-gnu/libr_egg.so
/usr/lib/x86_64-linux-gnu/libr_flag.so
/usr/lib/x86_64-linux-gnu/libr_fs.so
/usr/lib/x86_64-linux-gnu/libr_hash.so
/usr/lib/x86_64-linux-gnu/libr_io.so
/usr/lib/x86_64-linux-gnu/libr_lang.so
/usr/lib/x86_64-linux-gnu/libr_magic.so
/usr/lib/x86_64-linux-gnu/libr_parse.so
/usr/lib/x86_64-linux-gnu/libr_reg.so
/usr/lib/x86_64-linux-gnu/libr_search.so
/usr/lib/x86_64-linux-gnu/libr_socket.so
/usr/lib/x86_64-linux-gnu/libr_syscall.so
/usr/lib/x86_64-linux-gnu/libr_util.so