Initial Upload

echo.c

@@ -0,0 +1,12 @@
+#include "types.h"
+#include "stat.h"
+#include "user.h"
+
+int main(int argc, char *argv[]) {
+    int i;
+
+    for (i = 1; i < argc; i++) {
+        printf(1, "%s%s", argv[i], i + 1 < argc ? " " : "\n");
+    }
+    exit();
+}