Ask a running bash (interactive) to run a command from outside

Question

I have a terminal (xterm) open with bash running in it, showing a prompt. Suppose I know this running bash\'s pid and the tty associated with this terminal. Is there any w

Answer 1

Use a TIOCSTI ioctl. Example in C:

char* cmd="ls\n";
int fd = open (ptsname, O_RDWR);

while (*cmd)
{
    ioctl(fd, TIOCSTI, cmd++);
}