1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2011 AT&T Intellectual Property *
5 * and is licensed under the *
6 * Eclipse Public License, Version 1.0 *
7 * by AT&T Intellectual Property *
8 * *
9 * A copy of the License is available at *
10 * http://www.eclipse.org/org/documents/epl-v10.html *
11 * (with md5 checksum b35adb5213ca9657e911e9befb180842) *
12 * *
13 * Information and Software Systems Research *
14 * AT&T Research *
15 * Florham Park NJ *
16 * *
17 * Glenn Fowler <gsf@research.att.com> *
18 * David Korn <dgk@research.att.com> *
19 * Phong Vo <kpv@research.att.com> *
20 * *
21 ***********************************************************************/
22 #pragma prototyped
23 /*
24 * Glenn Fowler
25 * AT&T Bell Laboratories
26 *
27 * return current PATH
28 */
29
30 #include <ast.h>
31
32 char*
pathbin(void)33 pathbin(void)
34 {
35 register char* bin;
36
37 static char* val;
38
39 if ((!(bin = getenv("PATH")) || !*bin) && !(bin = val))
40 {
41 if (!*(bin = astconf("PATH", NiL, NiL)) || !(bin = strdup(bin)))
42 bin = "/bin:/usr/bin:/usr/local/bin";
43 val = bin;
44 }
45 return bin;
46 }
47