# groonga - An open-source fulltext search engine and column store.

- 日本語

# 7.3.16. `config_get`

## 7.3.16.1. Summary

New in version 5.1.2.

`config_get` command returns the value of the specified configuration item.

## 7.3.16.2. Syntax

This command takes only one required parameter:

    config_get key

## 7.3.16.3. Usage

Here is an example to set a value to `alias.column` configuration item and get the value:

Execution example:

    config_set alias.column Aliases.real_name
    # [[0, 1337566253.89858, 0.000355720520019531], true]
    config_get alias.column
    # [[0, 1337566253.89858, 0.000355720520019531], "Aliases.real_name"]

Here is an example to get nonexistent configuration item value:

Execution example:

    config_get nonexistent
    # [[0, 1337566253.89858, 0.000355720520019531], ""]

`config_get` returns an empty string for nonexistent configuration item key.

## 7.3.16.4. Parameters

This section describes all parameters.

### 7.3.16.4.1. Required parameters

There is one required parameter.

#### 7.3.16.4.1.1. `key`

Specifies the key of target configuration item.

The max key size is 4KiB.

You can’t use an empty string as key.

### 7.3.16.4.2. Optional parameters

There is no optional parameter.

## 7.3.16.5. Return value

`config_get` command returns the value of the specified configuration item:

    [HEADER, VALUE]

### 7.3.16.5.1. `HEADER`

See Output format about `HEADER`.

### 7.3.16.5.2. `VALUE`

`VALUE` is the value of the configuration item specified by `key`. It’s a string.

## 7.3.16.6. See also

> - Configuration

> - config_set

> - config_delete