Heya! Many other distributions and Unixes have adopted (or are at least discussing) to prefix system users and groups with an underscore to avoid namespace clashes between vendor supplied and user created users/groups. To me this sounds like something we really should adopt in Fedora as well. At least for new system/group users we should mandate this nameing scheme. Adopting the scheme for existing system users/groups otoh is probably not trivial at this point in time (though certainly thinkable, by carefully fixing usermod to allow renaming users and then writing appropriate rpm scriptlets, that also possibly patch configuration files referencing the system users in question). (Don't expect me to work on this though, I am mostly dropping this here, in the hope that some champion is willing to pick that up and push this through FPC and fesco...) Debian: https://lists.debian.org/debian-devel/2014/02/msg00189.html Suse: http://lists.opensuse.org/opensuse-factory/2014-03/msg00333.html OpenBSD: http://www.openbsd.org/cgi-bin/cvsweb/~checkout~/ports/infrastructure/db/user.list Gentoo: http://thread.gmane.org/gmane.linux.gentoo.devel/90748 MacOS X: http://the-mac-os-x-server-mailing-list.10970.n7.nabble.com/Leopard-underscore-user-names-td11346.html Lennart -- Lennart Poettering, Red Hat -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct