busybox/coreutils/printenv.c

/* vi: set sw=4 ts=4: */
/*
 * printenv implementation for busybox
 *
 * Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
 * Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"

int printenv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int printenv_main(int argc UNUSED_PARAM, char **argv)
{
	/* no variables specified, show whole env */
	if (!argv[1]) {
		int e = 0;
		while (environ[e])
			puts(environ[e++]);
	} else {
		/* search for specified variables and print them out if found */
		char *arg, *env;

		while ((arg = *++argv) != NULL) {
			env = getenv(arg);
			if (env)
				puts(env);
		}
	}

	fflush_stdout_and_exit(EXIT_SUCCESS);
}
1	/* vi: set sw=4 ts=4: */
2	/*
3	* printenv implementation for busybox
4	*
5	* Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org>
6	* Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org>
7	*
8	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
9	*/
10
11	#include "libbb.h"
12
13	int printenv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
14	int printenv_main(int argc UNUSED_PARAM, char **argv)
15	{
16	/* no variables specified, show whole env */
17	if (!argv[1]) {
18	int e = 0;
19	while (environ[e])
20	puts(environ[e++]);
21	} else {
22	/* search for specified variables and print them out if found */
23	char arg, env;
24
25	while ((arg = *++argv) != NULL) {
26	env = getenv(arg);
27	if (env)
28	puts(env);
29	}
30	}
31
32	fflush_stdout_and_exit(EXIT_SUCCESS);
33	}