/usr/bin/dmxaddinput
/usr/bin/dmxaddscreen
/usr/bin/dmxinfo
/usr/bin/dmxreconfig
/usr/bin/dmxresize
/usr/bin/dmxrminput
/usr/bin/dmxrmscreen
/usr/bin/dmxtodmx
/usr/bin/dmxwininfo
/usr/bin/vdltodmx
/usr/bin/xdmxconfig
You may install this package on Debian with
apt-get
install xdmx-tools