I type a command in CentOS:
sudo journalctl -xe --unit ss
After that, i press Tab and see in the console:
sudo journalctl -xe --unit sshd.service
I type a command in Debian:
sudo journalctl -xe --unit ss
After that, i press Tab and ... and nothing happens:
sudo journalctl -xe --unit ss
Why doesn't work autocomplete journalctl in Debian?
To resolve the problem, you must add the user to the "systemd-journal" group:
Then logout and login or restart the computer.