diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,10 @@
+2009.6.14.2
+-----------
+
+### Feature
+
+* nemesis bin rename to `.nemesis`, this keeps working directory clean
+
 2009.6.14.1
 -----------
 
diff --git a/nemesis.cabal b/nemesis.cabal
--- a/nemesis.cabal
+++ b/nemesis.cabal
@@ -1,5 +1,5 @@
 Name:                 nemesis
-Version:              2009.6.14.1
+Version:              2009.6.14.2
 Build-type:           Simple
 Synopsis:             a rake like task management tool
 Description:
diff --git a/readme.md b/readme.md
--- a/readme.md
+++ b/readme.md
@@ -51,18 +51,18 @@
 
 run `nemesis`
 
-It will generate a bin `nem` inside your current folder.
+It will generate a bin `.nemesis` inside your current folder.
 
 ### Run
 
-run `./nem`
+run `./.nemesis`
 
          learn-fp: learn Functional Programming
     learn-haskell: learn Haskell
        learn-lisp: learn LISP
     
 
-run `./nem learn-haskell`
+run `./.nemesis learn-haskell`
 
     LISP is cool!
     into FP
@@ -87,7 +87,7 @@
 
 ### Build it yourself
 
-Example:
+If you don't want `nemesis` to compile `Nemesis` through intermediate `nemesis-tmp.hs` file, rename your `Nemesis` to `Nemesis.hs`, then start with this template.
 
     import System.Nemesis (run)
     import System.Nemesis.DSL
@@ -97,9 +97,11 @@
         
     main = run nemesis
 
+The logic is that whenever `main` is defined in `Nemesis.hs`, `nemesis` will act as `ghc --make` wrapper, so you can get nice error messages.
+
 Hint
 ----
 
-Save typing by aliasing `./nes` to `n`, i.e. inside `.your_shellrc`
+Save typing by aliasing `./.nemesis` to `n`, i.e. inside `.your_shellrc`
 
-    alias n="./nes"
+    alias n="./.nemesis"
diff --git a/src/System/Nemesis/Runner.hs b/src/System/Nemesis/Runner.hs
--- a/src/System/Nemesis/Runner.hs
+++ b/src/System/Nemesis/Runner.hs
@@ -49,7 +49,7 @@
     tmp_name        = "nemesis-tmp.hs"
     tmp_o           = "nemesis-tmp.o"
     tmp_hi          = "nemesis-tmp.hi"
-    bin             = "nem"
+    bin             = ".nemesis"
     src_base_name s = if s.ends_with ".hs" 
                         then s.reverse.drop 3.reverse
                         else s