Process IDs namespace: inode number of the current
man:pid_namespaces(7) in the proc filesystem.
+`time_ns`::
+ Time and system clock namespace: inode number of the current
+ man:time_namespaces(7) in the proc filesystem.
+
`user_ns`::
User and group IDs namespace: inode number of the current
man:user_namespaces(7) in the proc filesystem.