For example and learning purposes, I have a webpage that uses POST method to submit a text field. I have a server running script (bash) that I want to display what the Query_string is. I'm not completely familiar with PHP either, but I think $_POST would be used to print the submitted text. The script I am using is bash. What could I use to print out the submitted text? 
Shell script equivelent to PHP $_POST
bash;shell script;html