[galaxy-dev] Output redirect

Hi, For general galaxy output, I need to define sth like <outputs> <data format="input" name="out_file1" metadata_source="input"/> </outputs> and put $out_file1 as a parameter in the command tag. To my understanding, Galaxy will save the $out_file1 into a file and retrieve and display it on the result panel. I have a *.pl file which takes inputs and generate a file (result.txt) in my local server and return a file path. Can I redirect the galaxy output to this file? Currently, I am reading the file using the file path and push the content in the file into $out_file1. For large files, it is a waste of computing time and resource (since Galaxy will generate another file). Is there a solution for this? Thanks