Without further ado, the following was found: Issue: B<readlink> → B<readlink>(1) "The following command creates a PID namespace, using B<--fork> to ensure " "that the executed command is performed in a child process that (being the " "first process in the namespace) has PID 1. The B<--mount-proc> option " "ensures that a new mount namespace is also simultaneously created and that a " "new B<proc>(5) filesystem is mounted that contains information corresponding " "to the new PID namespace. When the B<readlink> command terminates, the new " "namespaces are automatically torn down."