config_data

config_data [options] [pattern]

-h
    Show help message and exit.

-v
    Show verbose output.

[pattern]
    Optional search pattern to filter configuration variables.

The `config_data` command is used in specific embedded Linux systems, particularly those using the Kconfig infrastructure, to display configuration values. It essentially provides a way to access and present the values of variables defined during the kernel or system configuration process. This tool is useful for debugging, system introspection, and understanding the configured state of the system. It allows users to see the compiled-in options and settings. The utility reads and outputs data related to different build configurations. It allows to search for specific configurations by name and also shows the values.

The `config_data` command is not a standard Linux utility and is typically found only on specific embedded Linux distributions or custom-built systems that heavily utilize Kconfig.
Its availability and exact functionality can vary significantly depending on the system.

Without any parameters, `config_data` displays all available configuration values. With a pattern, it filters and displays only those values whose names match the specified pattern. This allows to quickly identify and examine relevant configuration options.

The verbose option provides more information about each config parameter. This is helpful in debugging misconfigurations or incorrect assumptions about the built-in configurations.

The command's history is tied to the evolution of Kconfig and build systems in embedded Linux. It was likely created to provide a direct way to inspect configuration values without needing to parse complex build system files or kernel configuration files. Its usage is concentrated in specific projects requiring detailed configuration management and introspection capabilities.

kconfig(1), make(1)