This behaviour hits me recently, upgraded to bionic LTS from 16.04 LTS. Did not experience this before.
There is an askubuntu about it with more details: https://askubuntu.com/questions/1069743/open-a-file-from-the-command-line This should be fixed, as it is clearly a bug not to be able to open files from command line, man states: kile [ generic-options ] [ --line line ] [ --new ] [ file ] This is the currently shipped version that I use: LANG=C apt-cache policy kile kile: Installed: 4:2.9.91-4 Candidate: 4:2.9.91-4 Version table: *** 4:2.9.91-4 500 500 http://ftp-stud.hs-esslingen.de/ubuntu bionic/universe amd64 Packages 100 /var/lib/dpkg/status -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800355 Title: Allow file as command line argument To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kile/+bug/1800355/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs