sudo dpkg -i nomachine_6.9.2_1_amd64.deb Selecting previously unselected package nomachine. (Reading database ... 300206 files and directories currently installed.) Preparing to unpack nomachine_6.9.2_1_amd64.deb ... Unpacking nomachine (6.9.2-1) ... Setting up nomachine (6.9.2-1) ... NX> 700 Starting install at: Fri Jan 10 17:40:41 2020. NX> 700 Installing: nxclient version: 6.9.2. NX> 700 Using installation profile: Ubuntu. NX> 700 Install log is: /usr/NX/var/log/nxinstall.log. NX> 700 Compiling the USB module. NX> 700 Installing: nxplayer version: 6.9.2. NX> 700 Using installation profile: Ubuntu. NX> 700 Install log is: /usr/NX/var/log/nxinstall.log. NX> 700 To connect the remote printer to the local desktop, NX> 700 the user account must be a member of the CUPS System Group.. NX> 700 Player install completed with warnings. NX> 700 Please review the install log for details. NX> 700 Installing: nxnode version: 6.9.2. NX> 700 Using installation profile: Ubuntu. NX> 700 Install log is: /usr/NX/var/log/nxinstall.log. NX> 700 Creating configuration in: /usr/NX/etc/node.cfg. NX> 700 ERROR: Cannot install file: /usr/NX/etc/node-debian.cfg.sample. NX> 700 ERROR: Cannot validate license file. NX> 700 Displaying file: /usr/NX/share/documents/node/cups-info CUPS Printing Backend The  NoMachine Node  setup procedure could not detect your CUPS installation: either  CUPS  is not installed on  your system or it was installed in a non-standard path. CUPS is needed  in order to  enable  printing  support  in your NX system. Please note that you can enable  printing support for your NX system at any time; to do this make sure  that you have CUPS installed then run: /usr/NX/scripts/setup/nxnode --printingsetup to specify the location of the CUPS root path. NX> 700 Node install completed with warnings. NX> 700 Please review the install log for details. NX> 700 Installing: nxserver version: 6.9.2. NX> 700 Using installation profile: Ubuntu. NX> 700 Install log is: /usr/NX/var/log/nxinstall.log. NX> 700 Creating configuration in: /usr/NX/etc/server.cfg. NX> 700 ERROR: Cannot install file: /usr/NX/etc/server-debian.cfg.sample. /bin/grep: /usr/NX/etc/server.cfg: No such file or directory /bin/grep: /usr/NX/etc/server.cfg: No such file or directory /bin/grep: /usr/NX/etc/server.cfg: No such file or directory awk: fatal: cannot open file `/usr/NX/etc/server.cfg' for reading (No such file or directory) NX> 700 ERROR: Cannot install file: /usr/NX/etc/keys/node.localhost.id_dsa.pub. /bin/sed: can't read /var/NX/nx/.ssh/authorized_keys: No such file or directory NX> 700 ERROR: Cannot install file: /usr/NX/etc/keys/node.localhost.id_rsa.pub. /bin/sed: can't read /var/NX/nx/.ssh/authorized_keys: No such file or directory NX> 700 ERROR: Cannot install file: /usr/NX/etc/keys/node.localhost.id_dsa.pub. /bin/sed: can't read /var/NX/nx/.ssh/authorized_keys2: No such file or directory NX> 700 ERROR: Cannot install file: /usr/NX/etc/keys/node.localhost.id_rsa.pub. /bin/sed: can't read /var/NX/nx/.ssh/authorized_keys2: No such file or directory NX> 700 Server install completed with warnings. NX> 700 Please review the install log for details. NX> 700 Install completed with errors at: Fri Jan 10 17:41:02 2020. NX> 700 NoMachine was configured to run the following services: NX> 700 NX service on port: 4000 root@78 /usr #