Without further ado, the following was found: Issue: B<sleep> → B<sleep>(1) "The B<pidof>(1) command prints no output, because the B<sleep> processes " "have been killed. More precisely, when the B<sleep> process that has PID 1 " "in the namespace (i.e., the namespace\\(cqs init process) was killed, this " "caused all other processes in the namespace to be killed. By contrast, a " "similar series of commands where the B<--kill-child> option is not used " "shows that when B<unshare> terminates, the processes in the PID namespace " "are not killed:"
