From 5b57d28ffb6e1ef86b50f7d05d977826eae89bfe Mon Sep 17 00:00:00 2001
From: Kiyoshi Aman <kiyoshi.aman+adelie@gmail.com>
Date: Fri, 1 Feb 2019 22:55:37 +0000
Subject: initial population

---
 usr.bin/tty/tty.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 usr.bin/tty/tty.c

(limited to 'usr.bin/tty/tty.c')

diff --git a/usr.bin/tty/tty.c b/usr.bin/tty/tty.c
new file mode 100644
index 0000000..c5e5e80
--- /dev/null
+++ b/usr.bin/tty/tty.c
@@ -0,0 +1,81 @@
+/*	$NetBSD: tty.c,v 1.8 2011/09/06 18:34:57 joerg Exp $	*/
+
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__COPYRIGHT("@(#) Copyright (c) 1988, 1993\
+ The Regents of the University of California.  All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)tty.c	8.1 (Berkeley) 6/6/93";
+#endif
+__RCSID("$NetBSD: tty.c,v 1.8 2011/09/06 18:34:57 joerg Exp $");
+#endif /* not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+__dead static void usage(void);
+
+int
+main(int argc, char **argv)
+{
+	int ch, sflag;
+	char *t;
+
+	sflag = 0;
+	while ((ch = getopt(argc, argv, "s")) != -1) {
+		switch((char)ch) {
+		case 's':
+			sflag = 1;
+			break;
+		case '?':
+		default:
+			usage();
+			/* NOTREACHED */
+		}
+	}
+
+	t = ttyname(STDIN_FILENO);
+	if (!sflag)
+		puts(t ? t : "not a tty");
+	exit(t ? 0 : 1);
+}
+
+static void
+usage(void)
+{
+	fprintf(stderr, "usage: tty [-s]\n");
+	exit(2);
+}
-- 
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