Initial Contribution
diff --git a/toolbox/printenv.c b/toolbox/printenv.c
new file mode 100644
index 0000000..d5ea531
--- /dev/null
+++ b/toolbox/printenv.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+extern char** environ;
+
+int printenv_main (int argc, char **argv)
+{
+ char** e;
+ char* v;
+ int i;
+
+ if (argc == 1) {
+ e = environ;
+ while (*e) {
+ printf("%s\n", *e);
+ e++;
+ }
+ } else {
+ for (i=1; i<argc; i++) {
+ v = getenv(argv[i]);
+ if (v) {
+ printf("%s\n", v);
+ }
+ }
+ }
+
+ return 0;
+}
+