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54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/*
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* printenv implementation for busybox
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*
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* Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
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* Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "busybox.h"
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int printenv_main(int argc, char **argv)
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{
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extern char **environ;
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int e = 0;
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/* no variables specified, show whole env */
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if (argc == 1)
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while (environ[e])
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puts(environ[e++]);
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/* search for specified variables and print them out if found */
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else {
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int i;
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size_t l;
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char *arg, *env;
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for (i=1; (arg = argv[i]); ++i)
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for (; (env = environ[e]); ++e) {
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l = strlen(arg);
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if (!strncmp(env, arg, l) && env[l] == '=')
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puts(env + l + 1);
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}
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}
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bb_fflush_stdout_and_exit(0);
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}
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