echo 상태를 나타내는 코드

#include <termios.h>

#include <stdio.h>

int main()

{

struct termios info;

int rv;

rv = tcgetattr(0, &info);

if (rv == -1 )

{

perror("tcgetattr");

exit(1);

}

if (info.c_lflag & ECHO)

printf("echo is on, since its bit is 1\n");

else

printf("ECHO IS OFF , SINCe ITS BIT IS 0\n");

return 0;

}