version 1.6, 2011/11/20 16:29:50 |
version 1.25, 2014/04/04 15:55:19 |
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.\" $Id$ |
.\" $Id$ |
.\" |
.\" |
.\" Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
.\" Copyright (c) 2011, 2012 Kristaps Dzonsons <kristaps@bsd.lv> |
|
.\" Copyright (c) 2011, 2012, 2014 Ingo Schwarze <schwarze@openbsd.org> |
.\" |
.\" |
.\" Permission to use, copy, modify, and distribute this software for any |
.\" Permission to use, copy, modify, and distribute this software for any |
.\" purpose with or without fee is hereby granted, provided that the above |
.\" purpose with or without fee is hereby granted, provided that the above |
|
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.Dt APROPOS 1 |
.Dt APROPOS 1 |
.Os |
.Os |
.Sh NAME |
.Sh NAME |
.Nm apropos |
.Nm apropos , |
|
.Nm whatis |
.Nd search manual page databases |
.Nd search manual page databases |
.Sh SYNOPSIS |
.Sh SYNOPSIS |
.Nm |
.Nm |
.Op Fl m Ar manpath |
.Op Fl C Ar file |
|
.Op Fl M Ar path |
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.Op Fl m Ar path |
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.Op Fl O Ar outkey |
.Op Fl S Ar arch |
.Op Fl S Ar arch |
.Op Fl s Ar section |
.Op Fl s Ar section |
.Ar expression... |
.Ar expression ... |
.Sh DESCRIPTION |
.Sh DESCRIPTION |
The |
The |
.Nm |
.Nm apropos |
utility queries manual page databases generated by |
and |
.Xr mandocdb 8 , |
.Nm whatis |
|
utilities query manual page databases generated by |
|
.Xr mandocdb 8 , |
evaluating on |
evaluating on |
.Ar expression |
.Ar expression |
for each file in each database. |
for each file in each database. |
|
.Pp |
|
By default, |
|
.Nm |
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searches for |
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.Xr mandocdb 8 |
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databases in the default paths stipulated by |
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.Xr man 1 , |
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parses terms as case-sensitive regular expressions |
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.Pq the Li \&~ operator |
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over manual names and descriptions |
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.Pq the Li \&Nm No and Li \&Nd No macro keys . |
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Multiple terms imply pairwise |
|
.Fl o . |
|
.Nm whatis |
|
maps terms only to case-sensitive manual names. |
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.Pp |
Its arguments are as follows: |
Its arguments are as follows: |
.Bl -tag -width Ds |
.Bl -tag -width Ds |
.It Fl m Ar manpath |
.It Fl C Ar file |
Append the colon-separated paths to the default list of paths searched |
Specify an alternative configuration |
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.Ar file |
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in |
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.Xr man.conf 5 |
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format. |
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.It Fl M Ar path |
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Use the colon-separated path instead of the default list of paths |
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searched for |
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.Xr mandocdb 8 |
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databases. |
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Invalid paths, or paths without manual databases, are ignored. |
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.It Fl m Ar path |
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Prepend the colon-separated paths to the list of paths searched |
for |
for |
.Xr mandocdb 8 |
.Xr mandocdb 8 |
databases. |
databases. |
Invalid paths, or paths without manual databases, are ignored. |
Invalid paths, or paths without manual databases, are ignored. |
|
.It Fl O Ar outkey |
|
Show the values associated with the key |
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.Ar outkey |
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instead of the manual descriptions. |
.It Fl S Ar arch |
.It Fl S Ar arch |
Search only for a particular architecture. |
Restrict the search to pages for the specified |
.It Fl s Ar cat |
.Xr machine 1 |
Search only for a manual section. |
architecture. |
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.Ar arch |
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is case insensitive. |
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By default, pages for all architectures are shown. |
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.It Fl s Ar section |
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Restrict the search to the specified section of the manual. |
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By default, pages from all sections are shown. |
See |
See |
.Xr man 1 |
.Xr man 1 |
for a listing of manual sections. |
for a listing of sections. |
.El |
.El |
.Pp |
.Pp |
An |
An |
|
|
operator has precedence over |
operator has precedence over |
.Fl o |
.Fl o |
and both are evaluated left-to-right. |
and both are evaluated left-to-right. |
.Pp |
|
.Bl -tag -width Ds |
.Bl -tag -width Ds |
.It \&( Ar expr No \&) |
.It \&( Ar expr No \&) |
True if the subexpression |
True if the subexpression |
|
|
This has syntax |
This has syntax |
.Li [key[,key]*(=~)]?val , |
.Li [key[,key]*(=~)]?val , |
where operand |
where operand |
.Li key |
.Cm key |
is an |
is an |
.Xr mdoc 7 |
.Xr mdoc 7 |
macro to query and |
macro to query and |
.Li val |
.Cm val |
is its value. |
is its value. |
|
See |
|
.Sx Macro Keys |
|
for a list of available keys. |
Operator |
Operator |
.Li \&= |
.Li \&= |
evaluates a substring, while |
evaluates a substring, while |
.Li \&~ |
.Li \&~ |
evaluates a regular expression. |
evaluates a regular expression. |
.It Fl i Ar term |
.It Fl i Ar term |
Same as |
If |
.Ar term , |
|
but |
|
.Ar term |
.Ar term |
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is a regular expression, it |
is evaluated case-insensitively. |
is evaluated case-insensitively. |
|
Has no effect on substring terms. |
.El |
.El |
.Pp |
.Pp |
By default, |
.Nm whatis |
.Nm |
considers an |
searches for a |
.Ar expression |
.Xr mandocdb 8 |
to consist of an opaque keyword. |
database in the current working directory and |
.Pp |
parses terms as case-sensitive regular expressions |
|
.Pq the Li \&~ operator |
|
over manual names and descriptions |
|
.Pq the Li \&Nm No and Li \&Nd No macros . |
|
Multiple terms imply pairwise |
|
.Fl o . |
|
Results are sorted by manual title, with output formatted as |
Results are sorted by manual title, with output formatted as |
.Pp |
.Pp |
.D1 title(sec) \- description |
.D1 title(sec) \- description |
Line 144 Resulting manuals may be accessed as |
|
Line 185 Resulting manuals may be accessed as |
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If an architecture is specified in the output, use |
If an architecture is specified in the output, use |
.Pp |
.Pp |
.Dl $ man \-s sec \-S arch title |
.Dl $ man \-s sec \-S arch title |
|
.Ss Macro Keys |
|
Queries evaluate over a subset of |
|
.Xr mdoc 7 |
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macros indexed by |
|
.Xr mandocdb 8 . |
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In addition to the macro keys listed below, the special key |
|
.Cm any |
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may be used to match any available macro key. |
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.Pp |
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Names and description: |
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.Bl -column "xLix" description -offset indent -compact |
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.It Li NAME Ta manual name in the NAME section, subset of \&Nm |
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.It Li \&Nm Ta manual name |
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.It Li \&Nd Ta one-line manual description |
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.It Li arch Ta machine architecture (case-insensitive) |
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.It Li sec Ta manual section number |
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.El |
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.Pp |
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Sections and cross references: |
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.Bl -column "xLix" description -offset indent -compact |
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.It Li \&Sh Ta section header (excluding standard sections) |
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.It Li \&Ss Ta subsection header |
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.It Li \&Xr Ta cross reference to another manual page |
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.It Li \&Rs Ta bibliographic reference |
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.El |
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.Pp |
|
Semantic markup for command line utilities: |
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.Bl -column "xLix" description -offset indent -compact |
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.It Li \&Fl Ta command line options (flags) |
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.It Li \&Cm Ta command modifier |
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.It Li \&Ar Ta command argument |
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.It Li \&Ic Ta internal or interactive command |
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.It Li \&Ev Ta environmental variable |
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.It Li \&Pa Ta file system path |
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.El |
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.Pp |
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Semantic markup for function libraries: |
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.Bl -column "xLix" description -offset indent -compact |
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.It Li \&Lb Ta function library name |
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.It Li \&In Ta include file |
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.It Li \&Ft Ta function return type |
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.It Li \&Fn Ta function name |
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.It Li \&Fa Ta function argument type and name |
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.It Li \&Vt Ta variable type |
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.It Li \&Va Ta variable name |
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.It Li \&Dv Ta defined variable or preprocessor constant |
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.It Li \&Er Ta error constant |
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.It Li \&Ev Ta environmental variable |
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.El |
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.Pp |
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Various semantic markup: |
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.Bl -column "xLix" description -offset indent -compact |
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.It Li \&An Ta author name |
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.It Li \&Lk Ta hyperlink |
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.It Li \&Mt Ta Do mailto Dc hyperlink |
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.It Li \&Cd Ta kernel configuration declaration |
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.It Li \&Ms Ta mathematical symbol |
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.It Li \&Tn Ta tradename |
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.El |
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.Pp |
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Physical markup: |
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.Bl -column "xLix" description -offset indent -compact |
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.It Li \&Em Ta italic font or underline |
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.It Li \&Sy Ta boldface font |
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.It Li \&Li Ta typewriter font |
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.El |
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.Pp |
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Text production: |
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.Bl -column "xLix" description -offset indent -compact |
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.It Li \&St Ta reference to a standards document |
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.It Li \&At Ta At No version reference |
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.It Li \&Bx Ta Bx No version reference |
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.It Li \&Bsx Ta Bsx No version reference |
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.It Li \&Nx Ta Nx No version reference |
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.It Li \&Fx Ta Fx No version reference |
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.It Li \&Ox Ta Ox No version reference |
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.It Li \&Dx Ta Dx No version reference |
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.El |
.Sh ENVIRONMENT |
.Sh ENVIRONMENT |
.Bl -tag -width Ds |
.Bl -tag -width MANPATH |
.It Ev MANPATH |
.It Ev MANPATH |
Comma-separated paths overriding the default list of paths searched for |
The standard search path used by |
manual databases. |
.Xr man 1 |
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may be changed by specifying a path in the |
|
.Ev MANPATH |
|
environment variable. |
Invalid paths, or paths without manual databases, are ignored. |
Invalid paths, or paths without manual databases, are ignored. |
|
Overridden by |
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.Fl M . |
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If |
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.Ev MANPATH |
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begins with a colon, it is appended to the default list; |
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if it ends with a colon, it is prepended to the default list; |
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or if it contains two adjacent colons, |
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the standard search path is inserted between the colons. |
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If none of these conditions are met, it overrides the |
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standard search path. |
.El |
.El |
.\" .Sh FILES |
.Sh FILES |
|
.Bl -tag -width "/etc/man.conf" -compact |
|
.It Pa mandoc.db |
|
name of the |
|
.Xr mandocdb 8 |
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keyword database |
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.It Pa /etc/man.conf |
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default |
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.Xr man 1 |
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configuration file |
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.El |
.Sh EXIT STATUS |
.Sh EXIT STATUS |
.Ex -std |
.Ex -std |
.Sh EXAMPLES |
.Sh EXAMPLES |
Search for |
Search for |
.Qq mdoc |
.Qq .cf |
within the manual name and description: |
as a substring of manual names and descriptions: |
.Pp |
.Pp |
.Dl $ apropos mdoc |
.Dl $ apropos .cf |
.Pp |
.Pp |
Two variants of searching for |
Include matches for |
.Qq mdoc , |
.Qq .cnf |
.Qq roff , |
and |
or |
.Qq .conf |
.Qq man |
as well: |
within manual names and descriptions: |
|
.Pp |
.Pp |
.Dl $ apropos mdoc roff man |
.Dl $ apropos .cf .cnf .conf |
.Dl $ apropos mdoc \-o roff \-o man |
|
.Pp |
.Pp |
Search for |
Search in names and descriptions using a regular expression: |
|
.Pp |
|
.Dl $ apropos '~set.?[ug]id' |
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.Pp |
|
Search for manuals in the library category mentioning both the |
.Qq optind |
.Qq optind |
and |
and the |
.Qq optarg |
.Qq optarg |
as variable names in the library category: |
variables: |
.Pp |
.Pp |
.Dl $ apropos \-s 3 \(dqVa~^optind$\(dq -a \(dqVa~^optarg$\(dq |
.Dl $ apropos \-s 3 Va=optind \-a Va=optarg |
.Pp |
.Pp |
Search for all manuals referencing |
Do exactly the same as calling |
.Qq POSIX |
.Xr whatis 1 |
in any letter case: |
with the argument |
|
.Qq ssh : |
.Pp |
.Pp |
.Dl $ apropos \-\- \-i posix |
.Dl $ apropos \-\- \-i 'Nm~[[:<:]]ssh[[:>:]]' |
|
.Pp |
|
The following two invocations are equivalent: |
|
.Pp |
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.D1 Li $ apropos -S Ar arch Li -s Ar section expression |
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.Bd -ragged -offset indent |
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.Li $ apropos \e( Ar expression Li \e) |
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.Li -a arch~^( Ns Ar arch Ns Li |any)$ |
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.Li -a sec~^ Ns Ar section Ns Li $ |
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.Ed |
.Sh SEE ALSO |
.Sh SEE ALSO |
.Xr man 1 , |
.Xr man 1 , |
.Xr mandoc 1 , |
.Xr re_format 7 , |
.Xr re_format 7 |
.Xr mandocdb 8 |
.Sh AUTHORS |
.Sh HISTORY |
|
An |
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.Nm |
|
utility first appeared in |
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.Bx 2 . |
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It was rewritten from scratch for |
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.Ox 5.6 . |
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.Pp |
The |
The |
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.Fl M |
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option and the |
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.Ev MANPATH |
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variable first appeared in |
|
.Bx 4.3 ; |
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.Fl m |
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in |
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.Bx 4.3 Reno ; |
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.Fl C |
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in |
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.Bx 4.4 Lite1 ; |
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and |
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.Fl S |
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and |
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.Fl s |
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in |
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.Ox 4.5 . |
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.Sh AUTHORS |
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.An -nosplit |
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.An Bill Joy |
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wrote the original |
|
.Bx |
.Nm |
.Nm |
utility was written by |
in February 1979. |
.An Kristaps Dzonsons , |
The current version was written by |
.Mt kristaps@bsd.lv . |
.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv |
|
and |
|
.An Ingo Schwarze Aq Mt schwarze@openbsd.org . |