.\" Copyright (c) 1992 The Regents of the University of California
.\" Copyright (c) 1990, 1992 Jan-Simon Pendry
.\" This code is derived from software donated to Berkeley by
.\" %sccs.include.redist.roff%
.\" @(#)mount_kernfs.8 8.1 (Berkeley) %G%
.Nd mount the /kern file system
command attaches an instance of the kernel parameter
namespace to the global filesystem namespace.
The conventional mount point is
This command is normally executed by
The filesystem includes several regular files which can be read,
some of which can also be written.
The contents of the files is in a machine-independent format,
either a string, or an integer in decimal ASCII.
Where numbers are returned, a trailing newline character is also added.
.Bl -tag -width copyright -compact
the time at which the system was last booted (decimal ASCII).
kernel copyright message.
the hostname, with a trailing newline.
The hostname can be changed by writing to this file.
A trailing newline will be stripped from the hostname being written.
the frequency of the system clock (decimal ASCII).
the 1, 5 and 15 minute load average in kernel fixed-point format.
The final integer is the fix-point scaling factor.
All numbers are in decimal ASCII.
the machine pagesize (decimal ASCII).
the number of pages of physical memory in the machine (decimal ASCII).
the system root directory.
In a chroot'ed environment,
can be used to create a new
will then refer to the system global root, not the current process root.
the second and microsecond value of the system clock.
Both numbers are in decimal ASCII.
the kernel version string.
can be generated by running:
.Dq Ic "sed 1q /kern/version"
This filesystem may not be NFS-exported.