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.\"
.\" Copyright (c) 1996, 1997 Shigio Yamaguchi. 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. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by Shigio Yamaguchi.
.\" 4. Neither the name of the author nor the names of any co-contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.\"
.Dd Nov 26, 1997
.Dt BTREEOP 1
.Os BSD 4
.Sh NAME
.Nm btreeop
.Nd btree database maintenance tool
.Sh SYNOPSIS
.Nm btreeop
.Op Fl A
.Op Fl C
.Op Fl D[keyno] Ar key
.Op Fl K[keyno] Ar key
.Op Fl L
.Op Fl k Ar prefix
.Op Ar dbname
.Sh DESCRIPTION
.Nm Btreeop
execute simple operations for
.Xr btree 3
database.
.Nm Btreeop
can create database, write record, read record (sequential or indexed) and
delete record from it.
Duplicate entries are allowed.
Multi-key is available but only primary key can use index of
.Xr btree 3 .
.Sh OPTIONS
A capital letter means a command. If no command specified
then it assume sequential read operation.
.Bl -tag -width Ds
.It Fl A
append records. If database doesn't exist, btreeop creates it.
.It Fl C
create database and write records to it.
.It Fl D[keyno] Ar key
delete records by the key. By default, keyno is 0 (primary key).
.It Fl K[keyno] Ar key
search records by the key. By default, keyno is 0 (primary key).
.It Fl L
list all primary keys.
Following two command lines are identical except that the latter is much faster.
btreeop | awk '{print $1}' | uniq
btreeop -L
.It Fl k Ar prefix
scan records which have the prefix as a primary key.
This option is valid only with sequential read operation (-L command or non command).
Following two command lines are identical except that the latter is much faster.
btreeop | awk '$1 ~ /^fo/ {print }'
btreeop -k fo
.It Ar dbname
database name. default is 'btree'.
.Sh DATA FORMAT
To creat (or append) database,
.Nm btreeop
read data from stdin.
The format of the data is the following.
Primary-key Secondary-key-1 Secondary-key-2 Data
(keyno = 0) (keyno = 1) (keyno = 2)
--------------------------------------------------------------
main 246 main.c main (){\\n
func 120 library.c func(a1, a2)\\n
.
.
.
.El
.Bl -enum -offset indent
.It
All key and data are separated by blank('\\t' or ' ').
.It
Key cannot include blank.
.It
Data can include blank.
.It
Null data not allowed.
.It
Additionally, META record is available. META record has a key that start with
a blank. You can read this record only by indexed read operation (-K option).
Usage is unlimited by btreeop.
.El
.Sh EXAMPLES
Create database.
% btreeop -C
key1 data1
key2 data2
key3 data3
^D
%
Append records.
% btreeop -A
__.VERSION 2
key2 data2-2
^D
%
Sequential read.
% btreeop
key1 data1
key2 data2-2
key2 data2
key3 data3
%
Indexed read.
% btreeop -K key2
key2 data2-2
key2 data2
% btreeop -K ' __.VERSION'
__.VERSION 2
%
List primary keys.
% btreeop -L
key1
key2
key3
%
Delete record.
% btreeop -D ' __.VERSION'
% btreeop -K ' __.VERSION'
%
.Sh FILES
.Bl -tag -width tags -compact
.It Pa btree
default database name.
.El
.Sh DIAGNOSTICS
.Nm Btreeop
exits with a non 0 value if an error occurred, 0 otherwise.
.Sh SEE ALSO
.Xr btree 3
.Sh AUTHOR
Shigio Yamaguchi (shigio@wafu.netgate.net)
.Sh HISTORY
The
.Nm
command appeared in FreeBSD 2.2.2.
|
