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.\" $NetBSD: whatis.1,v 1.5 2022/09/11 20:32:37 gutteridge Exp $
.\"
.\" Copyright (c) 2012 Joerg Sonnenberger <joerg@NetBSD.org>
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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.Dd June 16, 2016
.Dt WHATIS 1
.Os
.Sh NAME
.Nm whatis
.Nd describe what a command is
.Sh SYNOPSIS
.Nm
.Op Fl C Ar path
.Ar command Ar ...
.Sh DESCRIPTION
The
.Nm
program queries the apropos database built by
.Xr makemandb 8 .
It searches for manual pages with name
.Ar command
and outputs name of the matching manual pages along with the section and the
brief description from the NAME section.
.Pp
It supports the following options:
.Bl -tag -width indent
.It Fl C Ar path
Use different
.Xr man 1
configuration file than the default,
.Pa /etc/man.conf .
.El
.Sh FILES
.Bl -hang -width /etc/man.conf -compact
.It Pa /etc/man.conf
The location of the SQLite FTS database can be configured using the
.Cd _mandb
tag.
.El
.Sh SEE ALSO
.Xr apropos 1 ,
.Xr man 1 ,
.Xr man.conf 5 ,
.Xr makemandb 8
.Sh HISTORY
The
.Nm
command appeared in 3.0BSD.
It was rewritten in
.Nx 6.0
to use the SQLite index created by
.Xr makemandb 8 .