It's not an error if rm fails.

bert-github · bert-github · commit a5a24318ebc5 · 2012-03-21T20:01:43.000+01:00
diff --git a/css3-layout/Makefile b/css3-layout/Makefile
@@ -50,7 +50,7 @@ update:
 	hg pull -u
 
 clean:
-	rm Overview.html
+	-rm Overview.html
 
 
 
