.\" Copyright (c) 1989, 1990 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)apropos.1	6.8 (Berkeley) %G%
.\"
.Dd 
.Dt APROPOS 1
.Sh NAME
.Nm apropos
.Nd locate commands by keyword lookup
.Sh SYNOPSIS
.Nm apropos
.Op Fl M Ar path
.Op Fl m Ar path
.Ar keyword ...
.Sh DESCRIPTION
.Nm Apropos
shows which manual pages contain instances of any of the given
.Ar keyword(s)
in their title line.
Each word is considered separately and case of letters is ignored.
Words which are part of other words are considered; when looking for
\*(Lqcompile\*(Rq,
.Nm apropos
will also list all instances of \*(Lqcompiler\*(Rq.
.Pp
If the line output by
.Nm apropos
starts
.Li \*(Lqname(section) ...\*(Rq
you can enter
.Li \*(Lqman section name\*(Rq
to get
its documentation.
.Pp
The options are as follows:
.Tp Fl M
Override the list of standard directories where
.Nm apropos
searches for a database named
.Pa whatis.db .
The supplied
.Ar path
must be a colon (\*(Lq:\*(Rq) separated list of directories.
This search path may also be set using the environmental variable
.Ev MANPATH .
.Tp Fl m
Augment the list of standard directories where
.Nm apropos
searches for its database.
The supplied
.Ar path
must be a colon (\*(Lq:\*(Rq) 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
environmental variable are searched.
.Sh ENVIRONMENT
.Tw MANPATH
.Tp Ev MANPATH
The standard search path used by
.Xr man 1
may be overridden by specifying a path in the
.Ev MANPATH
environmental variable.
The format of the path is a colon (\*(Lq:\*(Rq) separated list of directories.
.Tp
.Sh FILES
.Tw whatis.db
.Tp Pa whatis.db
name of the apropos database
.Tp
.Sh SEE ALSO
.Xr man 1 ,
.Xr whatis 1 ,
.Xr whereis 1
.Sh HISTORY
.Nm apropos
appeared in 3 BSD.