/usr/share/dx/samples/outboard/ is in dxsamples 4.2.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/dx/samples/outboard/Makefile_alphax
/usr/share/dx/samples/outboard/Makefile_aviion
/usr/share/dx/samples/outboard/Makefile_hp700
/usr/share/dx/samples/outboard/Makefile_ibm6000
/usr/share/dx/samples/outboard/Makefile_ibmpvs
/usr/share/dx/samples/outboard/Makefile_intelnt
/usr/share/dx/samples/outboard/Makefile_os2
/usr/share/dx/samples/outboard/Makefile_sgi
/usr/share/dx/samples/outboard/Makefile_solaris
/usr/share/dx/samples/outboard/Makefile_sun4
/usr/share/dx/samples/outboard/Readme
/usr/share/dx/samples/outboard/async.c
/usr/share/dx/samples/outboard/async.mdf
/usr/share/dx/samples/outboard/dummy.c
/usr/share/dx/samples/outboard/hello.c
/usr/share/dx/samples/outboard/hello.mdf
/usr/share/dx/samples/outboard/makedata
/usr/share/dx/samples/outboard/my_simulation.c
/usr/share/dx/samples/outboard/socket.c
/usr/share/dx/samples/outboard/watchfile.c
/usr/share/dx/samples/outboard/watchfile.mdf
/usr/share/dx/samples/outboard/watchsocket.c
/usr/share/dx/samples/outboard/watchsocket.cfg
/usr/share/dx/samples/outboard/watchsocket.mdf
/usr/share/dx/samples/outboard/watchsocket.net