NAME

ttyname, isatty − find name of a terminal

SYNOPSIS

#include <stdlib.h>

char ∗ttyname (int fildes);

int isatty (int fildes);

DESCRIPTION

ttyname returns a pointer to a string containing the null-terminated path name of the terminal device associated with file descriptor fildes.

isatty returns 1 if fildes is associated with a terminal device, 0 otherwise. 

FILES

/dev/∗

DIAGNOSTICS

ttyname returns a NULL pointer if fildes does not describe a terminal device in directory /dev. 

SEE ALSO

ttysrch(4)

NOTES

The return value points to static data whose content is overwritten by each call. 

  —  C Development Set