need to change iphlen earlier; icmp_error needs original ip_len; cleanups

[unix-history] / usr / src / usr.bin / man / man.1

.\" Copyright (c) 1989, 1990 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"     @(#)man.1	6.11 (Berkeley) %G%
.\"
.TH MAN 1 "%Q"
.UC 4
.SH NAME
man \- display the on-line manual pages
.SH SYNOPSIS
.nf
.ft B
man [ -acw ] [ -M path ] [ -m path ] [ section ] name ...
.ft R
.fi
.SH DESCRIPTION
.I Man
displays the UNIX manual pages entitled
.IR name .
.PP
The options are as follows:
.TP
a
Display all of the manual pages for a specified
.I section
and
.I name
combination.
(Normally, only the first manual page found is displayed.)
.TP
c
Copy the manual page to the standard output instead of using
.IR more (1)
to paginate it.
This is done by default if the standard output is not a terminal device.
.TP
M
Override the list of standard directories which
.I man
searches for manual pages.
The supplied
.I path
must be a colon (``:'') separated list of directories.
This search path may also be set using the environment variable
.IR MANPATH .
The subdirectories to be searched as well as their search order
is specified by the ``_subdir'' line in the
.I man
configuration file.
.TP
m
Augment the list of standard directories which
.I man
searches for manual pages.
The supplied
.I path
must be a colon (``:'') separated list of directories.
These directories will be searched before the standard directories or
the directories specified using the
.I M
option or the
.I MANPATH
environment variable.
.TP
.I w
List the pathnames of the manual pages which
.I man
would display for the specified
.I section
and
.I name
combination.
.PP
The optional
.I section
restricts the directories that
.I man
will search.
The
.I man
configuration file (see
.IR man_conf (5))
specifies the possible
.I section
values that are currently available.
If only a single argument is specified or if the first argument is
not a valid section,
.I man
assumes that the argument is the name of a manual page to be displayed.
.SH ENVIRONMENT
.TP
MACHINE
As some manual pages are intended only for use on certain architectures,
.I man
searches certain directories applicable to the current machine.
.I Man's
determination of the current machine type may be overridden by setting
the environment variable MACHINE to the name of an architecture (see
.IR machine (1)).
Machine specific areas are checked before general areas.
.TP
MANPATH
The standard search path used by
.I man
may be overridden by specifying a path in the MANPATH environment
variable.
The format of the path is a colon (``:'') separated list of directories.
The subdirectories to be searched as well as their search order
is specified by the ``_subdir'' line in the
.I man
configuration file.
.TP
PAGER
Any value of the environment variable
.I PAGER
will be used instead of the standard pagination program
.IR more (1).
.SH FILES
/etc/man.conf	man configuration file (see
.IR man_conf (5))
.SH "SEE ALSO"
apropos(1), machine(1), whatis(1), whereis(1), man_conf(5)
.SH BUGS
The on-line manual pages are, by necessity, forgiving toward stupid
display devices, causing some manual pages to not be as good as their
typeset counterparts.