* Copyright 2001-2013 Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Daniel Reinhold, danielre@users.sf.net
*/
#include <stdio.h>
#include <unistd.h>
#include <OS.h>
void
usage()
{
printf("Usage: tty [-s]\n"
"Prints the file name for the terminal connected to standard input.\n"
" -s silent mode: no output -- only return an exit status\n");
exit(2);
}
int
main(int argc, char *argv[])
{
if (argc > 2)
usage();
else {
bool silent = false;
if (argc == 2) {
if (!strcmp(argv[1], "-s"))
silent = true;
else
usage();
}
if (!silent)
printf("%s\n", ttyname(STDIN_FILENO));
}
return (isatty(STDIN_FILENO) ? 0 : 1);
}
