diff --git a/man7/cgroup_namespaces.7 b/man7/cgroup_namespaces.7
index 135e5d7bd..72a473cf6 100644
--- a/man7/cgroup_namespaces.7
+++ b/man7/cgroup_namespaces.7
@@ -67,9 +67,24 @@ entries for each ancestor level in the cgroup hierarchy.
 .PP
 The following shell session demonstrates the effect of creating
 a new cgroup namespace.
+.PP
 First, (as superuser) we create a child cgroup in the
 .I freezer
-hierarchy, and put the shell into that cgroup:
+hierarchy, and place a process in that cgroup that we will
+use as part of the demonstration below:
+.PP
+.in +4n
+.EX
+# \fBmkdir \-p /sys/fs/cgroup/freezer/sub2\fP
+# \fBsleep 10000 &\fP     # Create a process that lives for a while
+[1] 20124
+# \fBecho 20124 > /sys/fs/cgroup/freezer/sub2/cgroup.procs\fP
+.EE
+.in
+.PP
+We then create another child cgroup in the
+.I freezer
+hierarchy and put the shell into that cgroup:
 .PP
 .in +4n
 .EX
@@ -98,7 +113,7 @@ files of, respectively, the new shell process started by the
 .BR unshare (1)
 command, a process that is in the original cgroup namespace
 .RI ( init ,
-with PID 1), and a process in a sibling cgroup
+with PID 1), and the process in the sibling cgroup
 .RI ( sub2 ):
 .PP
 .EX