/usr/share/racket/pkgs/unix-socket/ is in racket-common 6.7-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/racket/pkgs/unix-socket-doc/LICENSE.txt
/usr/share/racket/pkgs/unix-socket-doc/info.rkt
/usr/share/racket/pkgs/unix-socket-doc/scribblings/
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/compiled/
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/compiled/info_rkt.dep
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/compiled/info_rkt.zo
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/compiled/unix-socket_scrbl.dep
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/compiled/unix-socket_scrbl.zo
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/info.rkt
/usr/share/racket/pkgs/unix-socket-doc/scribblings/socket/unix-socket.scrbl
/usr/share/racket/pkgs/unix-socket-lib/LICENSE.txt
/usr/share/racket/pkgs/unix-socket-lib/info.rkt
/usr/share/racket/pkgs/unix-socket-lib/racket/
/usr/share/racket/pkgs/unix-socket-lib/racket/compiled/
/usr/share/racket/pkgs/unix-socket-lib/racket/compiled/unix-socket_rkt.dep
/usr/share/racket/pkgs/unix-socket-lib/racket/compiled/unix-socket_rkt.zo
/usr/share/racket/pkgs/unix-socket-lib/racket/private/
/usr/share/racket/pkgs/unix-socket-lib/racket/private/compiled/
/usr/share/racket/pkgs/unix-socket-lib/racket/private/compiled/unix-socket-ffi_rkt.dep
/usr/share/racket/pkgs/unix-socket-lib/racket/private/compiled/unix-socket-ffi_rkt.zo
/usr/share/racket/pkgs/unix-socket-lib/racket/private/unix-socket-ffi.rkt
/usr/share/racket/pkgs/unix-socket-lib/racket/unix-socket.rkt
/usr/share/racket/pkgs/unix-socket/LICENSE.txt
/usr/share/racket/pkgs/unix-socket/info.rkt