RTEMS 4.9.2 On-Line Library

Process Environment Manager isatty - Determine if File Descriptor is Terminal

RTEMS POSIX API User's Guide

int isatty(
  int fd
);

Returns 1 if fd is a terminal device and 0 otherwise.

This service returns 1 if fd is an open file descriptor connected to a terminal and 0 otherwise.

RTEMS POSIX API User's Guide