mirror of
https://review.haiku-os.org/haiku
synced 2025-02-15 10:08:36 +01:00
54 lines
1021 B
C
54 lines
1021 B
C
|
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
|
||
|
|
//
|
||
|
|
// Copyright (c) 2001-2003, OpenBeOS
|
||
|
|
//
|
||
|
|
// This software is part of the OpenBeOS distribution and is covered
|
||
|
|
// by the OpenBeOS license.
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// File: tty.c
|
||
|
|
// Author: Daniel Reinhold (danielre@users.sf.net)
|
||
|
|
// Description: prints the file name of the user's terminal
|
||
|
|
//
|
||
|
|
// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
|
||
|
|
|
||
|
|
#include <OS.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <unistd.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);
|
||
|
|
}
|