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ttyname(3C)          COMPATIBILITY FUNCTIONS          ttyname(3C)



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.

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



























          Last change: C Programming Language Utilities         1