extern int cmd_start(int argc, const char **argv);
extern int cmd_stop(int argc, const char **argv);
extern int cmd_enable_events(int argc, const char **argv);
extern int cmd_disable_events(int argc, const char **argv);
extern int cmd_enable_channels(int argc, const char **argv);
extern int cmd_disable_channels(int argc, const char **argv);
extern int cmd_start(int argc, const char **argv);
extern int cmd_stop(int argc, const char **argv);
extern int cmd_enable_events(int argc, const char **argv);
extern int cmd_disable_events(int argc, const char **argv);
extern int cmd_enable_channels(int argc, const char **argv);
extern int cmd_disable_channels(int argc, const char **argv);