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sulogin: use bb_error_msg instead of bb_info_msg; better message
[oweals/busybox.git]
/
coreutils
/
printenv.c
diff --git
a/coreutils/printenv.c
b/coreutils/printenv.c
index d38f8fb5f5986cdd134a78aa4b185d7fd4734711..bd5db7073a318331847884504d5bddd2c3666e38 100644
(file)
--- a/
coreutils/printenv.c
+++ b/
coreutils/printenv.c
@@
-8,8
+8,16
@@
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//usage:#define printenv_trivial_usage
+//usage: "[VARIABLE]..."
+//usage:#define printenv_full_usage "\n\n"
+//usage: "Print environment VARIABLEs.\n"
+//usage: "If no VARIABLE specified, print all."
+
#include "libbb.h"
#include "libbb.h"
+/* This is a NOFORK applet. Be very careful! */
+
int printenv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int printenv_main(int argc UNUSED_PARAM, char **argv)
{
int printenv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int printenv_main(int argc UNUSED_PARAM, char **argv)
{
@@
-17,9
+25,14
@@
int printenv_main(int argc UNUSED_PARAM, char **argv)
/* no variables specified, show whole env */
if (!argv[1]) {
/* no variables specified, show whole env */
if (!argv[1]) {
- int e = 0;
- while (environ[e])
- puts(environ[e++]);
+ char **e = environ;
+
+ /* environ can be NULL! (for example, after clearenv())
+ * Check for that:
+ */
+ if (e)
+ while (*e)
+ puts(*e++);
} else {
/* search for specified variables and print them out if found */
char *arg, *env;
} else {
/* search for specified variables and print them out if found */
char *arg, *env;