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.\" $OpenBSD: whatis.1,v 1.8 2013/07/13 19:27:46 schwarze Exp $
.\"
.\" Copyright (c) 1989, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)whatis.1 8.1 (Berkeley) 6/6/93
.\"
.Dd $Mdocdate: July 13 2013 $
.Dt WHATIS 1
.Os
.Sh NAME
.Nm whatis
.Nd describe what a command is
.Sh SYNOPSIS
.Nm whatis
.Op Fl C Ar file
.Op Fl M Ar path
.Op Fl m Ar path
.Op Fl S Ar arch
.Op Fl s Ar section
.Ar name ...
.Sh DESCRIPTION
The
.Nm
utility looks up the given commands and shows the header lines
from the manual pages.
You can then use the
.Xr man 1
command to get more information.
.Nm
will match manual page
.Ar names
on a case insensitive basis and for multiple word entries
will match on each individual word.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl C Ar file
Specify an alternate configuration
.Ar file
in
.Xr man.conf 5
format.
The default is
.Pa /etc/man.conf .
.It Fl M Ar path
Override the list of standard directories
.Nm
searches for its database named
.Dq Pa mandoc.db .
The supplied
.Ar path
must be a colon
.Pq Ql \&:
separated list of directories.
This search path may also be set using the environment variable
.Ev MANPATH .
.It Fl m Ar path
Augment the list of standard directories
.Nm
searches for its database named
.Dq Pa mandoc.db .
The supplied
.Ar path
must be a colon-separated list of directories.
These directories will be searched before the standard directories
or the directories supplied with the
.Fl M
option or the
.Ev MANPATH
environment variable are searched.
.It Fl S Ar arch
Restrict the search to pages for the specified
.Xr machine 1
architecture.
.Ar arch
is case insensitive.
By default, pages for all architectures are shown.
.It Fl s Ar section
Restrict the search to the specified section of the manual.
By default, pages from all sections are shown.
See
.Xr man 1
for a listing of sections.
.El
.Sh ENVIRONMENT
.Bl -tag -width MANPATH
.It Ev MANPATH
The standard search path used by
.Xr man 1
may be changed by specifying a path in the
.Ev MANPATH
environment variable.
If
.Ev MANPATH
begins with a colon, it is appended to the default list;
if it ends with a colon, it is prepended to the default list;
or if it contains two adjacent colons,
the standard search path is inserted between the colons.
If none of these conditions are met, it overrides the
standard search path.
.El
.Sh FILES
.Bl -tag -width "/etc/man.conf" -compact
.It Pa mandoc.db
name of the
.Xr makewhatis 8
keyword database
.It Pa mandoc.index
name of the
.Xr makewhatis 8
filename database
.It Pa /etc/man.conf
default
.Xr man 1
configuration file
.El
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr apropos 1 ,
.Xr man 1 ,
.Xr whereis 1 ,
.Xr which 1 ,
.Xr man.conf 5 ,
.Xr makewhatis 8
.Sh HISTORY
Part of the functionality of
.Nm
was already provided by the former
.Nm manwhere
utility in
.Bx 1 .
The
.Nm
command first appeared in
.Bx 2 .
It was rewritten from scratch for
.Ox 5.1 .
.Pp
The
.Fl M
option and the
.Ev MANPATH
variable first appeared in
.Bx 4.3 ;
.Fl m
in
.Bx 4.3 Reno ;
.Fl C
in
.Bx 4.4 Lite1 ;
and
.Fl S
and
.Fl s
in
.Ox 5.1 .
.Sh AUTHORS
.An -nosplit
.An Bill Joy
wrote
.Nm manwhere
in 1977
and the original
.Bx
.Nm
in February 1979.
The current version was written by
.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
|
