yaz-client
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## Name

yaz-client — Z39.50/SRU client for implementors

## Synopsis

`yaz-client` [`-a `apdulog``] [`-b `berdump``] [`-c `cclfile``] [`-d `dump``] [`-f `cmdfile``] [`-k `size``] [`-m `marclog``] [`-p `proxy-addr``] [`-q `cqlfile``] [`-t `dispcharset``] [`-u `auth``] [`-v `loglevel``] [`-V`] [`-x`] [server-addr]

## DESCRIPTION

yaz-client is a Z39.50/SRU client (origin) with a simple command line interface that allows you to test behavior and performance of Z39.50 targets and SRU servers.

If the `server-addr` is specified, the client creates a connection to the Z39.50/SRU target at the address given.

When yaz-client is started it tries to read commands from one of the following files:

- Command file if it is given by option -f.

- `.yazclientrc` in current working directory.

- `.yazclientrc` in the user's home directory. The value of the `HOME` is used to determine the home directory. Normally, `HOME` is only set on POSIX systems such as Linux, FreeBSD, Solaris.

## OPTIONS

-a `filename`

  If specified, logging of protocol packages will be appended file given. If `filename` is specified as `-`, the output is written to `stdout`.

-b `filename`

  If specified, YAZ will dump BER data in readable notation to the file specified. If `filename` is specified as `-` the output is written to `stdout`.

-c `filename`

  If specified, CCL configuration will be read from the file given.

-d `dump`

  If specified, YAZ will dump BER data for all PDUs sent and received to individual files, named `dump`.DDD.`raw`, where DDD is 001, 002, 003, ..

-f `cmdfile`

  Reads commands from `cmdfile`. When this option is used, YAZ client does not read .yazclientrc from current directory or home directory.

-k `size`

  Sets preferred messages and maximum record size for Initialize Request in kilobytes. Default value is 1024 (1 MB).

-m `filename`

  If specified, retrieved records will be appended to the file given.

-p `proxy-addr`

  If specified, the client will use the proxy at the address given. YAZ client will connect to a proxy on the address and port given. The actual target will be specified as part of the InitRequest to inform the proxy about actual target.

-q `filename`

  If specified, CQL configuration will be read from the file given.

-t `displaycharset`

  If displaycharset is given, it specifies name of the character set of the output (on the terminal on which YAZ client is running).

-u `auth`

  If specified, the `auth` string will be used for authentication.

`-v` `level`
  Sets the LOG level to `level`. Level is a sequence of tokens separated by comma. Each token is a integer or a named LOG item - one of `fatal`, `debug`, `warn`, `log`, `malloc`, `all`, `none`.
-V

  Prints YAZ version.

-x

  Makes the YAZ client print hex dumps of packages sent and received on standard output.

## COMMANDS

The YAZ client accepts the following commands.

`open` `zurl`

  Opens a connection to a server. The syntax for `zurl` is the same as described above for connecting from the command line.

  Syntax:

  [`(tcp|ssl|unix|http)':'`]`host` [:`port`][/`base`]

`quit`

  Quits YAZ client

`find` `query`

  Sends a Search Request using the `query` given. By default the query is assumed to be PQF. See command querytype for more information.

`delete` `setname`

  Deletes result set with name `setname` on the server.

`base` `base1` `base2` ...

  Sets the name(s) of the database(s) to search. One or more databases may be specified separated by blanks. This commands overrides the database given in `zurl`.

`show` [`start`[+`number`]]

  Fetches records by sending a Present Request from the start position given by `start` a number of records given by `number`. If `start` is not given, then the client will fetch from position of the last retrieved record plus 1. If `number` is not given, then one record will be fetched at a time.

`scan` `term`

  Scans database index for a term. The syntax resembles the syntax for `find`. If you want to scan for the word `water` you could write

          scan water

  but if you want to scan only in, say the title field, you would write

          scan @attr 1=4 water

`setscan` `set` `term`
  Scans database index for a term within a result set. This is similar to the scan command but has a result set as its first argument.
`scanpos` `pos`
  Sets preferred position for scan. This value is used in next scan. By default position is 1.
`scansize` `size`
  Sets number of entries to be returned by scan. Default number of entries is 20.
`scanstep` `step`
  Set step-size for scan. This value is used in next scan sent to the target. By default step-size is 0.
`sort` `sortspecs`

  Sorts a result set. The sort command takes a sequence of space-separated sort specifications, with each sort specification consisting of two space-separated words (so that the whole specification list is made up of an even number of words). The first word of each specification holds a field (sort criterion) and the second holds flags. If the sort criterion includes `=` it is assumed that the `SortKey` is of type `sortAttributes` using Bib-1: in this case the integer before `=` is the attribute type and the integer following `=` is the attribute value. If no `=` is in the criterion it is treated as a sortfield of type InternationalString. The flags word of each sort specification must consist of `s` for case sensitive or `i` for case insensitive, and `<` for ascending order or `>` for descending order.

`sort+`

  Same as `sort` but stores the sorted result set in a new result set.

`authentication` `openauth`

  Sets up a authentication string if a server requires authentication (v2 OpenStyle). The authentication string is first sent to the server when the `open` command is issued and the Z39.50 Initialize Request is sent, so this command must be used before `open` in order to be effective. A common convention for the `authopen` string is that the username - and password is separated by a slash, e.g. `myusername/mysecret`.

`sru` `method` `version`

  Selects SRU method and version. Must be one of `POST`, `GET`, `SOAP` (default). Version should be either 1.1 or 1.2. Other versions are allowed - for testing purposes (version negotiation with SRU server).

`list_all`

  This command displays status and values for many settings.

`lslb` `n`

  Sets the limit for when no records should be returned together with the search result. See the Z39.50 standard for more details.

`ssub` `n`

  Sets the limit for when all records should be returned with the search result. See the Z39.50 standard for more details.

`mspn` `n`

  Sets the number of records should be returned if the number of records in the result set is between the values of `lslb` and `ssub`. See the Z39.50 standard for more details.

`status`

  Displays the values of `lslb`, `ssub` and `mspn`.

`setname`

  Switches named result sets on and off. Default is on.

`cancel`

  Sends a Trigger Resource Control Request to the target.

`format` `oid`

  Sets the preferred transfer syntax for retrieved records. yaz-client supports all the record syntaxes that currently are registered. See Z39.50 Standard for more details. Commonly used records syntaxes include usmarc, sutrs, grs1 and xml.

`elements` `e`

  Sets the element set name for the records. Many targets support element sets are B (for brief) and F (for full).

`close`

  Sends a Z39.50 Close APDU and closes connection with the peer

`querytype` `type`

  Sets the query type as used by command `find`. The following is supported: `prefix` for Prefix Query Notation (Type-1 Query); `ccl` for CCL search (Type-2 Query), `cql` for CQL (Type-104 search with CQL OID), `ccl2rpn` for CCL to RPN conversion (Type-1 Query). `cql2rpn` for CQL to RPN conversion (Type-1 Query).

`attributeset` `set`

  Sets attribute set OID for prefix queries (RPN, Type-1).

`refid` `id`

  Sets reference ID for Z39.50 Request(s).

`itemorder` `type` `no`

  Sends an Item Order Request using the ILL External. `type` is either 1 or 2 which corresponds to ILL-Profile 1 and 2 respectively. The `no` is the Result Set position of the record to be ordered.

`update` `action` `recid` `doc`

  Sends Item Update Request. The `action` argument must be the action type: one of `insert`, `replace`, `delete` and `update`. The second argument, `recid`, is the record identifier (any string). Third argument which is optional is the record document for the request. If doc is preceded with "<", then the following characters are treated as a filename with the records to be updated. Otherwise doc is treated as a document itself. The doc may also be quited in double quotes. If doc is omitted, the last received record (as part of present response or piggybacked search response) is used for the update.

`source` `filename`

  Executes list of commands from file `filename`, just like source on most UNIX shells. A single dot (`.`) can be used as an alternative.

`!` `args`

  Executes command `args` in subshell using the `system` call.

`push_command` `command`

  The push_command takes another command as its argument. That command is then added to the history information (so you can retrieve it later). The command itself is not executed. This command only works if you have GNU readline/history enabled.

`set_apdufile` `filename`

  Sets that APDU should be logged to file `filename`. Another way to achieve APDU log is by using command-line option `-a`.

`set_auto_reconnect` `flag`

  Specifies whether YAZ client automatically reconnect if target closes connection (Z39.50 only).

  `flag` must be either `on` or `off`.

`set_auto_wait` `flag`

  Specifies whether YAZ client should wait for response protocol packages after a request. By default YAZ client waits (on) for response packages immediately after a command (find, show) has been issued. If `off` is used, YAZ client does not attempt to receive packages automatically. These will have to be manually received when command `wait_response` is used.

  `flag` must be either `on` or `off`.

`set_marcdump` `filename`

  Specifies that all retrieved records should be appended to file `filename`. This command does the thing as option `-m`.

`schema` `schemaid`

  Specifies schema for retrieval. Schema may be specified as an OID for Z39.50. For SRU, schema is a simple string URI.

`charset` `negotiationcharset` [`displaycharset`] [[`marccharset`]]

  Specifies character set (encoding) for Z39.50 negotiation / SRU encoding and/or character set for output (terminal).

  `negotiationcharset` is the name of the character set to be negotiated by the server. The special name `-` for `negotiationcharset` specifies no character set to be negotiated.

  If `displaycharset` is given, it specifies name of the character set of the output (on the terminal on which YAZ client is running). To disable conversion of characters to the output encoding, the special name `-` (dash) can be used. If the special name `auto` is given, YAZ client will convert strings to the encoding of the terminal as returned by `nl_langinfo` call.

  If `marcharset` is given, it specifies name of the character set of retrieved MARC records from server. See also `marcharset` command.

  ### Note

  Since character set negotation takes effect in the Z39.50 Initialize Request you should issue this command before command `open` is used.

  ### Note

  MARC records are not covered by Z39.50 character set negotiation, so that's why there is a separate character that must be known in order to do meaningful conversion(s).

`negcharset` `charset`

  Specifies character set for negotiation (Z39.50). The argument is the same as second argument for command `charset`.

`displaycharset` `charset`

  Specifies character set for output (display). The argument is the same as second argument for command `charset`.

`marccharset` `charset`

  Specifies character set for retrieved MARC records so that YAZ client can display them in a character suitable for your display. See `charset` command. If `auto` is given, YAZ will assume that MARC21/USMARC is using MARC8/UTF8 and ISO-8859-1 for all other MARC variants. The charset argument is the same as third argument for command `charset`.

`querycharset` `charset`

  Specifies character set for query terms for Z39.50 RPN queries and Z39.50 Scan Requests (termListAndStartPoint). This is a pure client-side conversion which converts from displayCharset to queryCharset.

`set_cclfile` `filename`

  Specifies that CCL fields should be read from file file `filename`. This command does the thing as option `-c`.

`set_cqlfile` `filename`

  Specifies that CQL fields should be read from file file `filename`. This command does the thing as option `-q`.

`register_oid` `name` `class` `OID`

  This command allows you to register your own object identifier - so that instead of entering a long dot-notation you can use a short name instead. The `name` is your name for the OID, `class` is the class, and `OID` is the raw OID in dot notation. Class is one `appctx`, `absyn`, `attet`, `transyn`, `diagset`, `recsyn`, `resform`, `accform`, `extserv`, `userinfo`, `elemspec`, `varset`, `schema`, `tagset`, `general`. If you're in doubt use the `general` class.

`register_tab` `command` `string`

  This command registers a TAB completion string for the command given.

`sleep` `seconds`

  This command makes YAZ client sleep (be idle) for the number of seconds given.

`wait_response` [ `number`]

  This command makes YAZ client wait for a number of response packages from target. If `number` is omitted, 1 is assumed.

  This command is rarely used and is only useful if command `set_auto_wait` is set to off.

`xmles` `OID` `doc`

  Sends XML Extended Services request using the OID and doc given.

`zversion` `ver`

  This command sets Z39.50 version for negotiation. Should be used before `open`. By default 3 (version 3) is used.

`options` `op1 op2..`

  This command sets Z39.50 options for negotiation. Should be used before `open`.

  The following options are supported: `search`, `present`, `delSet`, `resourceReport`, `triggerResourceCtrl`, `resourceCtrl`, `accessCtrl`, `scan`, `sort`, `extendedServices`, `level_1Segmentation`, `level_2Segmentation`, `concurrentOperations`, `namedResultSets`, `encapsulation`, `resultCount`, `negotiationModel`, `duplicationDetection`, `queryType104`, `pQESCorrection`, `stringSchema`.

## EXAMPLE

The simplest example of a Prefix Query would be something like

        f knuth

or

        f "donald knuth"

In those queries no attributes was specified. This leaves it up to the server what fields to search but most servers will search in all fields. Some servers does not support this feature though, and require that some attributes are defined. To add one attribute you could do:

        f @attr 1=4 computer

where we search in the title field, since the use(1) is title(4). If we want to search in the author field and in the title field, and in the title field using right truncation it could look something like this:

        f @and @attr 1=1003 knuth @attr 1=4 @attr 5=1 computer

Finally using a mix of Bib-1 and GILS attributes could look something like this:

        f @attrset Bib-1 @and @attr GILS 1=2008 Washington @attr 1=21 weather

## FILES

`yaz-<version>/client/client.c`

`$HOME/.yazclientrc`

`$HOME/.yazclient.history`

## SEE ALSO

yaz(7) bib1-attr(7)

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