libmisc/shell/main_tty.c

0001 /**
0002  * @file
0003  *
0004  * @brief TTY Shell Command Implmentation
0005  */
0006
0007 /*
0008  * Copyright (c) 2001 Fernando Ruiz Casas <fruizcasas@gmail.com>
0009  *
0010  *  The license and distribution terms for this file may be
0011  *  found in the file LICENSE in this distribution or at
0012  *  http://www.rtems.org/license/LICENSE.
0013  */
0014
0015 #ifdef HAVE_CONFIG_H
0016 #include "config.h"
0017 #endif
0018
0019 #include <stdio.h>
0020 #include <unistd.h>
0021 #include <string.h>
0022 #include <errno.h>
0023
0024 #include <rtems.h>
0025 #include <rtems/shell.h>
0026 #include "internal.h"
0027
0028 static int rtems_shell_main_tty(
0029   int   argc RTEMS_UNUSED,
0030   char *argv[] RTEMS_UNUSED
0031 )
0032 {
0033   printf("%s\n", ttyname(fileno(stdin)));
0034   return 0;
0035 }
0036
0037 rtems_shell_cmd_t rtems_shell_TTY_Command = {
0038   "tty",                                      /* name */
0039   "show ttyname",                             /* usage */
0040   "misc",                                     /* topic */
0041   rtems_shell_main_tty,                       /* command */
0042   NULL,                                       /* alias */
0043   NULL                                        /* next */
0044 };