root@ubuntu-vbox:~# pwck
user lp: directory /var/spool/lpd does not exist
user news: directory /var/spool/news does not exist
user uucp: directory /var/spool/uucp does not exist
user www-data: directory /var/www does not exist
user list: directory /var/list does not exist
user irc: directory /var/run/ircd does not exist
user gnats: directory /var/lib/gnats does not exist
user nobody: directory /nonexistent does not exist
user dhcp: directory /nonexistent does not exist
user syslog: directory /home/syslog does not exist
user klog: directory /home/klog does not exist
user hplip: directory /var/run/hplip does not exist
user pulse: directory /var/run/pulse does not exist
user vboxadd: directory /var/run/vboxadd does not exist
pwck: no changes