1997-10-20 07:16:30 +04:00
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.\" $NetBSD: whatis.1,v 1.4 1997/10/20 03:17:44 lukem Exp $
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1997-01-09 15:03:21 +03:00
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.\"
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1993-12-21 05:56:54 +03:00
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.\" Copyright (c) 1989, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)whatis.1 8.1 (Berkeley) 6/6/93
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.\"
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.Dd June 6, 1993
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.Dt WHATIS 1
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.Os BSD 4
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.Sh NAME
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.Nm whatis
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.Nd describe what a command is
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.Sh SYNOPSIS
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.Nm
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.Op Fl M Ar path
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.Op Fl m Ar path
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.Ar command Ar ...
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.Sh DESCRIPTION
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.Nm
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looks up a given command and gives the header line from the manual page.
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You can then use the
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.Xr man 1
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command to get more information.
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.Pp
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The options are as follows:
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.Bl -tag -width Fl
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.It Fl M Ar path
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Override the list of standard directories
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.Nm
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searches for its database named
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.Dq Pa whatis.db .
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The supplied
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.Ar path
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must be a colon
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.Dq \&:
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separated list of directories.
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This search path may also be set using the environment variable
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.Ev MANPATH .
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.It Fl m Ar path
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Augment the list of standard directories
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.Nm
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searches for its database named
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.Dq Pa whatis.db .
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The supplied
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.Ar path
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must be a colon
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.Dq \&:
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separated list of directories.
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These directories will be searched before the standard directories
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or the directories supplied with the
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.Fl M
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option or the
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.Ev MANPATH
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environment variable are searched.
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.El
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.Sh ENVIRONMENT
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.Bl -tag -width MANPATH
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.It Ev MANPATH
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The standard search path used by
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.Xr man 1
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may be overridden by specifying a path in the
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.Ev MANPATH
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environment variable.
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.El
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.Sh FILES
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.Bl -tag -width whatis.db
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.It Pa whatis.db
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name of the whatis database
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.El
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.Sh SEE ALSO
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.Xr apropos 1 ,
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.Xr man 1 ,
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.Xr whereis 1
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 3.0 .
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