/*! @page command_line WiredTiger command line utility

WiredTiger includes a command line utility, \c wt.

@section Synopsis
<code>wt [-Vv] [-C config] [-h directory] command [command-specific arguments]</code>

@section Description
The \c wt tool is a command-line utility that provides access to
various pieces of the WiredTiger functionality.

@section Options
There are three global options:

@par <code>-C config</code>
Specify configuration strings for the ::wiredtiger_open function.
@par <code>-h directory</code>
Specify a database home directory.
@par <code>-V</code>
Display WiredTiger version and exit.
@par <code>-v</code>
Set verbose output.

Unless otherwise described by a \c wt command, the \c wt tool exits zero
on success and non-zero on error.

The \c wt tool supports several commands.

<hr>
@section utility_create wt create
Create a table or file.

The \c create command creates the specified \c uri with the specified
configuration.  It is equivalent to a call to WT_SESSION::create with
the specified string arguments.

@subsection utility_create_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] create [-c config] uri</code>

@subsection utility_create_options Options
The following are command-specific options for the \c create command:

@par <code>-c</code>
Include a configuration string to be passed to WT_SESSION::create.

<hr>
@section utility_drop wt drop
Drop a table or file.

The \c drop command drops the specified \c uri.  It is equivalent to a
call to WT_SESSION::drop with the "force" configuration argument.

@subsection utility_drop_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] drop [-s snapshot] uri</code>

@subsection utility_drop_options Options
The following are command-specific options for the \c drop command:

@par <code>-s</code>
Specify one more more snapshots to drop; the argument must be either the
name of a single snapshot to drop (a string), or a list containing one
of the following keys: "all" to drop all snapshots, "from=<snapshot>"
to drop all snapshots after and including the named snapshots, or
"to=<snapshot>" to drop all snapshots before and including the named
snapshot.

<hr>
@section utility_dump wt dump
Export data in a text format.

The \c dump command outputs the specified table in a portable format
which can be re-loaded into a new table using the \c load command.

See @subpage dump_formats for details of the dump file formats.

@subsection utility_dump_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] dump [-rx] [-f output] [-s snapshot] uri</code>

@subsection utility_dump_options Options
The following are command-specific options for the \c dump command:

@par <code>-f</code>
By default, the \c dump command output is written to the standard output;
the \c -f option re-directs the output to the specified file.

@par <code>-r</code>
Dump in reverse order, from largest to smallest.

@par <code>-s</code>
By default, the \c dump command opens the most recent snapshot of the object;
the \c -s option changes the \c dump command to open the named snapshot.

@par <code>-x</code>
Dump all characters in a hexadecimal encoding (the default is to leave
printable characters unencoded).

<hr>
@section utility_dumpfile wt dumpfile
Dump a file in a debugging format.

The \c dumpfile command dumps the specified physical file in a non-portable,
debugging format, exiting success if the file is correct, and failure if the
file is corrupted.

@subsection utility_dumpfile_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] dumpfile [-f output] file</code>

@subsection utility_dumpfile_options Options
The following are command-specific options for the \c dumpfile command:

@par <code>-f</code>
By default, the \c dumpfile command output is written to the standard
output; the \c -f option re-directs the output to the specified
file.

<hr>
@section utility_read wt list
List the tables and files in the database.

By default, the \c list command prints out the tables and files stored
in the database.  If an object name is specified as an argument, only
information about that object is printed.

@subsection utility_list_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] list [-sv] [uri]</code>

@subsection utility_list_options Options
The following are command-specific options for the \c list command:

@par <code>-s</code>
If the \c -s option is specified, the object's snapshots are printed
in a human-readable format.

@par <code>-v</code>
If the \c -v option is specified, the object's complete schema table
value is printed.

<hr>
@section utility_rename wt rename
Rename a table or file.

The \c rename command renames the specified table or file.

@subsection utility_rename_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] rename uri name</code>

@subsection utility_rename_options Options
The \c rename command has no command-specific options.

<hr>
@section utility_load wt load
Load a table or file from dump output.

The \c load command reads the standard input for data and loads it into
a table or file, creating the table or file if it does not yet exist.
The data should be the format produced by the \c dump command; see @ref
dump_formats for details.

By default, if the table or file already exists, data in the file or
table cannot be overwritten by the new data (use the \c -o option to
overwrite existing data).

@subsection utility_load_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] load [-ao] [-f input] [-r name] [uri configuration ...]</code>

@subsection utility_load_options Options
The following are command-specific options for the \c load command:

@par <code>-a</code>
If the \c -a option is specified, record number keys in the input are
ignored and the data is appended to the object and assigned new record
number keys.  The \c -a option is only applicable when loading an object
where the primary key is a record number.

@par <code>-f</code>
By default, the \c load command reads from the standard input; the \c
-f option reads the input from the specified file.

@par <code>-r</code>
By default, the \c load command uses the table or file name taken from
the input; the \c -r option renames the object.

@par <code>-o</code>
By default, input data will not overwrite existing data where the
key/value pair already exists in the object, and the attempt will fail;
the \c -o option causes the \c load command to overwrite already
existing data.

Additionally, \c uri and \c configuration pairs may be specified to the
\c load command.  Each of these pairs may be used to modify the
configuration of an object in the table or file.  For each of the pairs,
the configuration string will be appended to the WT_SESSION::create call
for the object matching the uri.

<hr>
@section utility_loadtext wt loadtext
Load text into a table or file.

The \c loadtext command reads the standard input for text and loads it
into a table or file.  The input data should be printable characters,
with newline delimiters for each key or value.

The \c loadtext command does not create the file if it does not yet
exist.

In the case of inserting values into a column-store table or file, each
value is appended to the table or file; in the case of inserting values
into a row-store table or file, lines are handled in pairs, where the
first line is the key and the second line is the value.  If the
row-store table or file already exists, data in the table or file will
be overwritten by the new data.

@subsection utility_loadtext_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] loadtext [-f input]</code>

@subsection utility_loadtext_options Options
The following are command-specific options for the \c loadtext command:

@par <code>-f</code>
By default, the \c loadtext command reads from the standard input; the
\c -f option reads the input from the specified file.

<hr>
@section utility_printlog wt printlog
Display the database log.

The \c printlog command outputs the database log.

@subsection utility_printlog_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] printlog [-p] [-f output]</code>

@subsection utility_printlog_options Options
The following are command-specific options for the \c printlog command:

@par <code>-f</code>
By default, the \c printlog command output is written to the standard
output; the \c -f option re-directs the output to the specified file.

@par <code>-p</code>
Display the log in a printable format.

<hr>
@section utility_read wt read
Read records from a table or file.

The \c read command prints out the records associated with the specified
keys from the specified object.

The object must be configured with string or record number keys and
string values.

The \c read command exits non-zero if a specified record is not found.

@subsection utility_read_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] read uri key ...</code>

@subsection utility_read_options Options
The \c read command has no command-specific options.

<hr>
@section utility_salvage wt salvage
Recover data from a corrupted file.

The \c salvage command salvages the specified object, discarding any
data that cannot be recovered.  Underlying files are re-written in
place, overwriting the original file contents.

@subsection utility_salvage_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] salvage [-F force] uri</code>

@subsection utility_salvage_options Options
The following are command-specific options for the \c salvage command:

@par <code>-F</code>
By default, salvage will refuse to salvage files that fail basic tests
(for example, files that don't appear to be in a WiredTiger format).
The \c -F option forces the salvage of the file, regardless.

<hr>
@section utility_stat wt stat
Display database or object statistics.

The \c stat command outputs run-time statistics for the WiredTiger
engine, or, if specified, for the command-line object.

@subsection utility_stat_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] stat [uri]</code>

@subsection utility_stat_options Options
The \c stat command has no command-specific options.

<hr>
@section utility_upgrade wt upgrade
Upgrade a table or file.

The \c upgrade command upgrades the specified table or file, exiting
success if the object up-to-date, and failure if the object cannot be
upgraded.

@subsection utility_upgrade_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] upgrade uri</code>

@subsection utility_upgrade_options Options
The \c upgrade command has no command-specific options.

<hr>
@section utility_verify wt verify
Check the structural integrity of a table or file.

The \c verify command verifies the specified table or file, exiting
success if the object is correct, and failure if the object is corrupted.

@subsection utility_verify_synopsis Synopsis
<code>wt [-Vv] [-C config] [-h directory] verify uri</code>

@subsection utility_verify_options Options
The \c verify command has no command-specific options.

<hr>
@section utility_write wt write
Write records to a table or file.

The \c write command stores records into the specified object.

The object must be configured with string or record number keys and
string values.

If the \c write command is called with the \c -a option, each
command-line argument is a single value to be appended to the specified
column-store object.  If the \c write command is not called with the \c
-a option, the command-line arguments are key/value pairs.

Attempting to overwrite an already existing record will fail.

@subsection utility_write_synopsis Synopsis
<code>
wt [-Vv] [-C config] [-h directory] write -a uri value ...
<br>
wt [-Vv] [-C config] [-h directory] write [-o] uri key value ...
</code>

@subsection utility_write_options Options
The following are command-specific options for the \c write command:

@par <code>-a</code>
Append each value as a new record in the object.

@par <code>-o</code>
By default, attempting to overwrite an already existing record will
fail.  The \c -o option changes \c write to overwrite previously
existing records.

*/