On Sun, May 03, 2015 at 09:44:45AM +0300, Johannes Graumann wrote: > PROMPT> sudo echo 1 > /sys/fs/cgroup/cpuset/cgroup.clone_children > PROMPT> sudo echo 1 > /proc/sys/kernel/unprivileged_userns_clone I think redirections don't work for privileged operations via sudo. Instead sudo sh -c 'echo 1 > /sys/fs/cgroup/cpuset/cgroup.clone_children' sudo sh -c 'echo 1 > /proc/sys/kernel/unprivileged_userns_clone'