title: Convert function arguments from upper to lowercase in bash
body: <p>I'm trying to make a convenience function to fix issues when I accidentally have my caps locks on and am trying to run some case-sensitive tools.</p>
  
  <p>e.g. I occasionally find myself typing <code>MAKE DEBUG</code> instead of <code>make debug</code>.</p>
  
  <p>What I have now is pretty straightforward: <code>alias MAKE="make"</code> and editing the makefiles to duplicate the rules, e.g. <code>DEBUG: debug</code>.</p>
  
  <p>I'd prefer a solution that works on the arguments, without having to modify the tools involved.</p>