ttyname(3C)                                                     ttyname(3C)

NAME
     ttyname, isatty - find name of a terminal

SYNOPSIS
     #include <unistd.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.

RESULT
     ttyname() returns a null pointer if fildes does not describe a termi-
     nal device in directory /dev.

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

FILES
     /dev/*

SEE ALSO
     ttysrch(4).
























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