mount_kernfs man page on 4.4BSD

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MOUNT_KERNFS(8)		  BSD System Manager's Manual	       MOUNT_KERNFS(8)

     mount_kernfs — mount the /kern file system

     mount_kernfs [-o options] /kern mount_point

     The mount_kern command attaches an instance of the kernel parameter
     namespace to the global filesystem namespace.  The conventional mount
     point is /kern.  This command is normally executed by mount(8) at boot

     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.

     The options are as follows:

     -o	     Options are specified with a -o flag followed by a comma sepa‐
	     rated string of options.  See the mount(8) man page for possible
	     options and their meanings.

     boottime	the time at which the system was last booted (decimal ASCII).
     copyright	kernel copyright message.
     hostname	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.
     hz		the frequency of the system clock (decimal ASCII).
     loadavg	the 1, 5 and 15 minute load average in kernel fixed-point for‐
		mat.  The final integer is the fix-point scaling factor.  All
		numbers are in decimal ASCII.
     pagesize	the machine pagesize (decimal ASCII).
     physmem	the number of pages of physical memory in the machine (decimal
     root	the system root directory.  In a chroot'ed environment,
		mount_kernfs can be used to create a new /kern mount point.
		/kern/root will then refer to the system global root, not the
		current process root.
     rootdev	the root device.
     rrootdev	the raw root device.
     time	the second and microsecond value of the system clock.  Both
		numbers are in decimal ASCII.
     version	the kernel version string.  The head line for /etc/motd can be
		generated by running: “sed 1q /kern/version”

     mount(2), unmount(2), fstab(5), mount(8)

     This filesystem may not be NFS-exported.

     The mount_kernfs utility first appeared in 4.4BSD.

4.4BSD				March 27, 1994				4.4BSD

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