1 files changed, 99 insertions, 0 deletions
diff --git a/usr.bin/env/env.c b/usr.bin/env/env.c
new file mode 100644
index 0000000..bf2430d
--- /dev/null
+++ b/usr.bin/env/env.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 1988, 1993, 1994
+ *	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, 1994\
+ The Regents of the University of California.  All rights reserved.");
+#endif /* not lint */
+
+#ifndef lint
+/*static char sccsid[] = "@(#)env.c	8.3 (Berkeley) 4/2/94";*/
+__RCSID("$NetBSD: env.c,v 1.20 2010/11/16 02:53:49 christos Exp $");
+#endif /* not lint */
+
+#include <err.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <locale.h>
+#include <errno.h>
+
+static void usage(void) __attribute__((__noreturn__));
+
+extern char **environ;
+
+int
+main(int argc, char **argv)
+{
+	char **ep;
+	char *cleanenv[1];
+	int ch;
+
+	setprogname(*argv);
+	(void)setlocale(LC_ALL, "");
+
+	while ((ch = getopt(argc, argv, "-i")) != -1)
+		switch((char)ch) {
+		case '-':			/* obsolete */
+		case 'i':
+			environ = cleanenv;
+			cleanenv[0] = NULL;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+
+	for (argv += optind; *argv && strchr(*argv, '=') != NULL; ++argv)
+		(void)putenv(*argv);
+
+	if (*argv) {
+		/* return 127 if the command to be run could not be found; 126
+		   if the command was found but could not be invoked */
+
+		(void)execvp(*argv, argv);
+		err((errno == ENOENT) ? 127 : 126, "%s", *argv);
+		/* NOTREACHED */
+	}
+
+	for (ep = environ; *ep; ep++)
+		(void)printf("%s\n", *ep);
+
+	exit(0);
+}
+
+static void
+usage(void)
+{
+	(void)fprintf(stderr, "Usage: %s [-i] [name=value ...] [command]\n",
+	    getprogname());
+	exit(1);
+}