changing pseudo tty echo mode from the master side

Question

On linux, I am opening a pseudo tty on the master side. While there is no client on the slave side, the pseudo tty seems to be echoing everything I am writing to him, which is n

Answer 1

None of the older answers provided the correct C code, so here it is:

struct termios tmios;
tcgetattr(ptfd, &tmios);
tmios.c_lflag &= ~(ECHO);
tcsetattr(ptfd, TCSANOW, &tmios);