bengt@CNC3000:~$ cat /etc/apt/sources.list.d/linuxcnc.list
deb http://linuxcnc.org/ stretch base
#deb-src http://linuxcnc.org/ stretch base
deb http://linuxcnc.org/ stretch 2.7-uspace
#deb-src http://linuxcnc.org/ stretch 2.7-uspace
#deb http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
#deb-src http://buildbot.linuxcnc.org/ stretch 2.7-rtpreempt
bengt@CNC3000:~$