title: awk equivalent of str_replace
body: <p>Is there a function in awk that replaces one string with another? Example, we have e file with values like this:</p>
  
  <pre><code>data_file:
  /some/path/to/data/2014/01-02/some_file
  /some/path/to/data/2014/01-02/some_file2
  /some/path/to/data/2014/01-02/some_file3
  
  cat data_file | awk '{ str_replace("/some/path/to/data/", ""); print }'
  # the above should output
  2014/01-02/some_file
  2014/01-02/some_file2
  2014/01-02/some_file3
  </code></pre>