| /* printenv -- minimal clone of BSD printenv(1). |
| |
| usage: printenv [varname] |
| |
| Chet Ramey |
| chet@po.cwru.edu |
| */ |
| |
| /* Copyright (C) 1997-2002 Free Software Foundation, Inc. |
| |
| This file is part of GNU Bash, the Bourne Again SHell. |
| |
| Bash is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| Bash is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with Bash. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #if defined (HAVE_CONFIG_H) |
| # include <config.h> |
| #endif |
| |
| #include "bashansi.h" |
| #include <stdio.h> /* puts */ |
| |
| extern char **environ; |
| |
| int |
| main (argc, argv) |
| int argc; |
| char **argv; |
| { |
| register char **envp, *eval; |
| int len; |
| |
| argv++; |
| argc--; |
| |
| /* printenv */ |
| if (argc == 0) |
| { |
| for (envp = environ; *envp; envp++) |
| puts (*envp); |
| exit (0); |
| } |
| |
| /* printenv varname */ |
| len = strlen (*argv); |
| for (envp = environ; *envp; envp++) |
| { |
| if (**argv == **envp && strncmp (*envp, *argv, len) == 0) |
| { |
| eval = *envp + len; |
| /* If the environment variable doesn't have an `=', ignore it. */ |
| if (*eval == '=') |
| { |
| puts (eval + 1); |
| exit (0); |
| } |
| } |
| } |
| exit (1); |
| } |
| |