hush/coreutils/printenv.c
Denis Vlasenko 9b49a5ed85 add -fvisibility=hidden to CC flags, mark XXX_main functions
EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
2007-10-11 10:05:36 +00:00

35 lines
774 B
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"
extern char **environ;
int printenv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int printenv_main(int argc, char **argv)
{
/* no variables specified, show whole env */
if (argc == 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(0);
}