👉 It's a command line utility used for setting up LIRC (Lightning Relay Controller Daemon). It's commonly used in Linux for managing, configuring, and controlling the communication between a wireless device like smartphones or tablets and an external controller like the Raspberry Pi. Detailed definitions are: 920.lircd.conf is a configuration file that specifies how to communicate with the external controller via LIRC protocol. The "lircd" command is used for setting up LIRC, while "conf" stands for configuration file. It's crucial for understanding how devices like smartphones communicate with external controllers.