[Users] Cancel startup from password dialog

[Ralf Mardorf]

On Sun, 23 Oct 2016 23:49:25 +0200, Johan Vromans wrote:
>Well, my ps (Fedora 23) reports:
>
>  $ ps -C foo
>  error: unsupported option (BSD syntax)

Supported by Ubuntu's official repositories and at least by the user
repository of Arch Linux, perhaps by the official repositories, too.

[root at moonstudio ~]# cat /etc/issue
Ubuntu 16.04.1 LTS \n \l

[root at moonstudio ~]# ps -C systemd
  PID TTY          TIME CMD
    1 ?        00:00:04 systemd
 1248 ?        00:00:00 systemd
[root at moonstudio ~]# systemd-nspawn -bqD /mnt/archlinux/
[snip]
[root at archlinux ~]# cat /etc/issue 
Arch Linux \r (\l)

[root at archlinux ~]# ps -C systemd
  PID TTY          TIME CMD
    1 ?        00:00:00 systemd
  105 ?        00:00:00 systemd
[root at archlinux ~]# pacman -Q procps-ng-classic
procps-ng-classic 3.3.11-1
[root at archlinux ~]# shutdown -h now
[snip]
[root at moonstudio ~]# dpkg -l procps | grep ii
ii  procps      2:3.3.10-4ubuntu2 amd64      /proc file system utilities