How do i get the input content that follows the rake command

all. How do开发者_JS百科 i get the content that follows the rake command ,

for example, when i type this command in terminal # rake make_file myfile so that it will creates a file named myfile.txt, how do i write this rake task ?

Thanks in advance.

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rake task_name some_param will actually try to fire two rake tasks: task_name and some_param unless the parameters are in the format of param=value, in which case the parameter is populated in the ENV constant.

So, rake task_name myfile=/some/file can be read from ENV["myfile"].