On Sun, 2016-10-23 at 16:06:30 +0200, Guillem Jover wrote: > I've just sent a patch for adduser to accept _-prefixed system names > (but not for normal users w/o --force-badname). Then if this gets > merged, there will be even more compelling reasons to use that. ;) Sorry, that would be <https://bugs.debian.org/521883>. Thanks, Guillem