1arduino-cli board details -b <FQBN> [flags]

1arduino-cli board details -b arduino:avr:nano

1--board-options strings                 List of board options separated by commas. Or can be used multiple times for multiple options.
2  -b, --fqbn string                           Fully Qualified Board Name, e.g.: arduino:avr:uno
3  -f, --full                                  Show full board details
4  -h, --help                                  help for details
5      --list-programmers                      Show list of available programmers
6      --show-properties string[="expanded"]   Show build properties. The properties are expanded, use "--show-properties=unexpanded" if you want them exactly as they are defined. (default "disabled")

1--additional-urls strings   Comma-separated list of additional URLs for the Boards Manager.
2      --config-dir string         Sets the default data directory (Arduino CLI will look for configuration file in this directory).
3      --config-file string        The custom config file (if not specified the default will be used).
4      --json                      Print the output in JSON format.
5      --log                       Print the logs on the standard output.
6      --log-file string           Path to the file where logs will be written.
7      --log-format string         The output format for the logs, can be: text, json (default "text")
8      --log-level string          Messages with this level and above will be logged. Valid levels are: trace, debug, info, warn, error, fatal, panic (default "info")
9      --no-color                  Disable colored output.