diff --git a/Facebook/command_line_cheat_sheet.md b/Facebook/command_line_cheat_sheet.md
index f3011db..9baaad5 100644
--- a/Facebook/command_line_cheat_sheet.md
+++ b/Facebook/command_line_cheat_sheet.md
@@ -20,6 +20,8 @@ jf land                                     | land the change
 -|-
 buck test @mode/dev-nosan local/path/...    | run all tests
 buck build @mode/opt local/path/...         | build optimized version (by default @mode/dev)
+buck build -c python.helpers=true //path:target | interactive shell to play with the modules
+... -ipython.par                            | not sure what this is
 
 # On deman DB
 |