Set all modem bits
#include <sys/ioctl.h>
#define TIOCMSET        _IOW('t', 109, int)
| Argument | Value | 
|---|---|
| fd | A file descriptor that you obtained by opening the device | 
| request | TIOCMSET | 
| Additional argument | A pointer to an int | 
This command sets all modem status bits for the terminal device.
The modem bits, a combination of the following:
None.