Annotation of src/usr.bin/printenv/printenv.c, Revision 1.6
1.6 ! deraadt 1: /* $OpenBSD: printenv.c,v 1.5 2003/06/10 22:20:49 deraadt Exp $ */
1.2 deraadt 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1987 Regents of the University of California.
5: * All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.4 millert 15: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
31:
32: #include <stdio.h>
33: #include <string.h>
34: #include <stdlib.h>
35:
36: /*
37: * printenv
38: *
39: * Bill Joy, UCB
40: * February, 1979
41: */
42: int
1.5 deraadt 43: main(int argc, char *argv[])
1.1 deraadt 44: {
45: extern char **environ;
1.3 mpech 46: char *cp, **ep;
47: int len;
1.1 deraadt 48:
49: if (argc < 2) {
50: for (ep = environ; *ep; ep++)
51: puts(*ep);
52: exit(0);
53: }
54: len = strlen(*++argv);
55: for (ep = environ; *ep; ep++)
56: if (!strncmp(*ep, *argv, len)) {
57: cp = *ep + len;
58: if (!*cp || *cp == '=') {
59: puts(*cp ? cp + 1 : cp);
60: exit(0);
61: }
62: }
63: exit(1);
64: }