Package: members Version: 20080128-5+nmu1+b1 `members` does not have Bash auto-completion capability on the contrary of the opposite program `groups`, part of the coreutils package.
To fix that, I suggest adding a new file to the package that would put a file in the /usr/share/bash-completion/completions/ directory, which would contain the following script (omitting the sandard overhead/decoration around): `complete -g members` This would then allow `members <TAB>` to show a list of available groups' name. I tested that successfully. I am using an up-to-date Devuan 2 Ascii based on top of Debian 9 Stretch (4.9.0-6-amd64 #1 SMP Debian 4.9.88-1+deb9u1 (2018-05-07) x86_64 GNU/Linux). Bernard Rosset https://rosset.net/