/usr/ is in libreadline-gplv2-dev 5.2+dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/readline/
/usr/include/readline/chardefs.h
/usr/include/readline/history.h
/usr/include/readline/keymaps.h
/usr/include/readline/rlconf.h
/usr/include/readline/rlstdc.h
/usr/include/readline/rltypedefs.h
/usr/include/readline/tilde.h
/usr/include/readline/readline.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libhistory.a
/usr/lib/x86_64-linux-gnu/libreadline.a
/usr/share/
/usr/share/doc/
/usr/share/doc/libreadline5/
/usr/share/doc/libreadline5/examples/
/usr/share/doc/libreadline5/examples/Makefile
/usr/share/doc/libreadline5/examples/excallback.c
/usr/share/doc/libreadline5/examples/rl-fgets.c
/usr/share/doc/libreadline5/examples/manexamp.c
/usr/share/doc/libreadline5/examples/rlptytest.c
/usr/share/doc/libreadline5/examples/fileman.c
/usr/share/doc/libreadline5/examples/rlversion.c
/usr/share/doc/libreadline5/examples/rl.c
/usr/share/doc/libreadline5/examples/rlcat.c
/usr/share/doc/libreadline5/examples/rltest.c
/usr/share/doc/libreadline5/examples/histexamp.c
/usr/lib/x86_64-linux-gnu/libhistory.so
/usr/lib/x86_64-linux-gnu/libreadline.so
/usr/share/doc/libreadline-gplv2-dev