diff --git a/tools/stack_array.subx b/linux/stack_array.subx
similarity index 99%
rename from tools/stack_array.subx
rename to linux/stack_array.subx
index 5affbc56..62360dd4 100644
--- a/tools/stack_array.subx
+++ b/linux/stack_array.subx
@@ -8,7 +8,7 @@
 
 # This file is kinda like a research notebook, to interactively arrive at the
 # solution. Nobody should have to do this without a computer. To run it:
-#   $ ./translate_subx_debug init.linux tools/stack_array.subx  &&  bootstrap --debug --trace --dump run a.elf
+#   $ ./translate_subx_debug 000init.linux stack_array.subx  &&  bootstrap/bootstrap --debug --trace --dump run a.elf
 # There are multiple versions. You'll need to uncomment exactly one.
 
 # The final version has its own Entry, but the others share this one.