Last change
on this file since 3867 was 3621, checked in by Bruno Cornec, 8 years ago |
New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
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1 | /* printenv -- minimal clone of BSD printenv(1).
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2 |
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3 | usage: printenv [varname]
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4 |
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5 | Chet Ramey
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6 | chet@po.cwru.edu
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7 | */
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8 |
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9 | /* Copyright (C) 1997-2002 Free Software Foundation, Inc.
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10 |
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11 | This file is part of GNU Bash, the Bourne Again SHell.
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12 |
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13 | Bash is free software; you can redistribute it and/or modify it under
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14 | the terms of the GNU General Public License as published by the Free
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15 | Software Foundation; either version 2, or (at your option) any later
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16 | version.
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17 |
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18 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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19 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 | for more details.
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22 |
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23 | You should have received a copy of the GNU General Public License along
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24 | with Bash; see the file COPYING. If not, write to the Free Software
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25 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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26 |
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27 | #include <stdio.h>
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28 | #include <stdlib.h>
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29 | #include <string.h>
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30 |
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31 | extern char **environ;
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32 |
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33 | int
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34 | main (argc, argv)
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35 | int argc;
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36 | char **argv;
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37 | {
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38 | register char **envp, *eval;
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39 | int len;
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40 |
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41 | argv++;
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42 | argc--;
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43 |
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44 | /* printenv */
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45 | if (argc == 0)
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46 | {
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47 | for (envp = environ; *envp; envp++)
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48 | puts (*envp);
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49 | exit(EXIT_SUCCESS);
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50 | }
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51 |
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52 | /* printenv varname */
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53 | len = strlen (*argv);
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54 | for (envp = environ; *envp; envp++)
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55 | {
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56 | if (**argv == **envp && strncmp (*envp, *argv, len) == 0)
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57 | {
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58 | eval = *envp + len;
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59 | /* If the environment variable doesn't have an `=', ignore it. */
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60 | if (*eval == '=')
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61 | {
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62 | puts (eval + 1);
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63 | exit(EXIT_SUCCESS);
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64 | }
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65 | }
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66 | }
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67 | exit(EXIT_FAILURE);
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68 | }
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