show cmd being executed

Library/Homebrew/formula_assertions.rb

@@ -6,6 +6,7 @@ module Homebrew
 
     # Returns the output of running cmd, and asserts the exit status
     def shell_output(cmd, result=0)
+      ohai cmd
       output = `#{cmd}`
       assert_equal result, $?.exitstatus
       output
@@ -13,6 +14,7 @@ module Homebrew
 
     # Returns the output of running the cmd, with the optional input
     def pipe_output(cmd, input=nil)
+      ohai cmd
       IO.popen(cmd, "w+") do |pipe|
         pipe.write(input) unless input.nil?
         pipe.close_write