From b70b4fb69631f8c6983d408934eb264e70b73028 Mon Sep 17 00:00:00 2001 From: erik Date: Sat, 15 Jan 2000 22:28:50 +0000 Subject: Sync up busybox with the latest and greatest. This is not stuff for the Embedix release. -Erik git-svn-id: svn://busybox.net/trunk/busybox@309 69ca8d6d-28ef-0310-b511-8ec308f3f277 --- tty.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 tty.c (limited to 'tty.c') diff --git a/tty.c b/tty.c new file mode 100644 index 000000000..83abaffb5 --- /dev/null +++ b/tty.c @@ -0,0 +1,42 @@ +/* + * Mini tty implementation for busybox + * + * Copyright (C) 2000 Edward Betts . + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include "internal.h" +#include +#include + +static const char tty_usage[] = "tty\n\n" +"Print the file name of the terminal connected to standard input.\n" +"\t-s\tprint nothing, only return an exit status\n"; + +extern int tty_main(int argc, char **argv) { + char *tty; + + if (argc > 1) { + if (argv[1][0] != '-' || argv[1][1] != 's') usage (tty_usage); + } + else { + tty = ttyname (0); + if (tty) puts (tty); + else puts ("not a tty"); + } + exit (isatty (0) ? TRUE : FALSE); +} -- cgit v1.2.3-55-g6feb