DJ> Why extra variables (-e) ignoring commands after pipeline ("|") while
DJ> running playbook with -e options. says

  The command module takes the command name followed by a list of
  space-delimited arguments. The given command will be executed on all
  selected nodes. It will not be processed through the shell, so variables
  like $HOME and operations like "<", ">", "|", ";" and "&" will not work
  (use the shell module if you need these features).

So, you need the 'shell' module if you want to run a pipeline. (See for some reasons
why you might not want to use 'shell' unless you really need to.)

                                      -Josh (

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