.\"
.\" 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:
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.\"    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.
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.Dd July 4, 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 Ar key
.Op Fl K Ar key
.Op Fl L
.Op Fl b
.Op Fl c Ar cashesize
.Op Fl l
.Op Fl p Ar psize
.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 index) and
delete record from it.
Duplicate entries are allowed.
.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 Ar key
delete records by the key.
.It Fl K Ar key
search records by the key.
.It Fl L
list all keys. It is identical to following command line.

	btreeop | awk '{print $1}' | sort | uniq
.It Fl b
assume BIG_ENDIAN byte order. default is LITTLE_ENDIAN.
.It Fl c Ar cashesize
specify cashesize. It's identical to 
.Nm info.cachesize
of BTREEINFO. (see btree(3))
.It Fl l
assume LITTLE_ENDIAN byte order. (the default)
.It Fl p Ar psize
specify page size. It's identical to 
.Nm info.psize
of BTREEINFO. (see btree(3))
.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.

  Key         Data\\n
  Key         Data\\n
  .
  .
  .

.El

.Bl -enum -offset indent
.It
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 search (with -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 kyes.

  % 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 value of 1 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.