.TH NEWFS 8 2/20/83
.UC 4
.SH NAME
newfs \- construct a new file system
.SH SYNOPSIS
.B /etc/newfs
[
.B \-v
] [
.B mkfs-options
]
.B special disk-type
.SH DESCRIPTION
.I Newfs
is a ``friendly'' front-end to the
.IR mkfs (8)
program.
.I Newfs
will look up the type of disk a file system is
being created on in the disk description
file
.IR /etc/disktab ,
calculate the appopriate
parameters to use in calling
.IR mkfs ,
then build the file system by forking 
.I mkfs 
and, if the file system is a root partition,
install the necessary bootstrap programs
in the initial 8 sectors of the device.
.PP
If the 
.B \-v
option is supplied, 
.I newfs
will print out its actions, including
the parameters passed to
.IR mkfs .
.PP
Options which may be used to override default
parameters passed to
.I mkfs
are:
.TP 10
.B \-s size
The size of the file system in sectors.
.TP 10
.B \-b block-size
The block size of the file system in bytes.  
.TP 10
.B \-f frag-size
The fragment size of the file system in bytes.
.TP 10
.B \-t #tracks/cylinder
.TP 10
.B \-c #cylinders/group
The number of cylinders per cylinder group in a file system.
The default value used is 16.
.TP 10
.B \-m free space %
The percentage of space reserved from normal users; the minimum
free space threshhold.  The default value used is 10%.
.TP 10
.B \-r revolutions/minute
The speed of the disk in revolutions per minute (normally 3600).
.TP 10
.B \-S sector-size
The size of a sector in bytes (almost never anything but 512).
.FILES
/etc/disktab	for disk geometry and file system partition information 
.br
/etc/mkfs	to actually build the file system
.br
/usr/mdec	for boot strapping programs
.SH "SEE ALSO"
fs(5),
fsck(8),
format(8)
.PP
McKusick, Joy, Leffler; "A Fast File System for Unix",
Computer Systems Research Group, Dept of EECS, Berkeley, CA 94720;
TR #7, September 1982.
.SH BUGS
Should figure out the type of the disk without the user's help.