Apt install bash-completion

apt install bash-completion
Reading package lists... Done
Building dependency tree
Reading state information... Done
bash-completion is already the newest version (1:2.8-1ubuntu1).
bash-completion set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded

apt install [ -y ], postgresql-common, --help, /etc/apt/