1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2009 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 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* 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