How to get terminal name from C program?

[Subbu Cherukuwada]

Hi,
I want to know the terminal name where a C program is running, within the same program i.e. something like the output of tty command?

[A. Clay Stephenson · Accepted solution]

Hi,

No problem, use ttyname. Man ttyname for details.

Example:

#include

#ifndef STDIN
#define STDIN 0
#endif

char *tty_device = NULL;

tty_device = ttyname(STDIN);

You should also use isatty() (man isatty) to make sure that stdin has not be redirected.

if (isatty(STDIN))
{
(void) printf("I'm a terminal\");
}
else
{
(void) printf("I ain't no stinkin terminal");
}

This should do it, Clay