The contents of the passwd file are as follows: root, daemon, bin, sys, sync, games, man, lp, mail, news, uucp, proxy, www-data, backup, list, irc, gnats,nobody, systemd-network, systemd-resolve, syslog, messagebus, _apt, lxd, uuidd, dnsmasq, landscape, sshd, avahi-autoipd, avahi, colord, speech-dispatcher, hplip, saned.