I am aware of the -u option in htop, where I can show only processes of a given user, such as:htop -u rootI am wondering whether there is a way to show processes of all user except root. 
htop: show processes of all users except root
htop
This is not possible, as of htop 0.8.3.Source: the source code.The best you can do is sort processes by user, root's processes will be conveniently lumped together.