There isn't interactive CLI mode (except terminal in GUI in bitcoin-qt). Instead, curl or other CLI tools are used to send commands to the daemon bitcoind (over http). The daemon must be started with the "-server" option beforehand in order to accept the commands.
curlor other CLI tools are used to send commands to the daemonbitcoind(over http). The daemon must be started with the "-server" option beforehand in order to accept the commands.