title: Shell Script output odd
body: <p>I am new to Shell Script programming. I am attempting to make a program that outputs only gives back the odd arguments. For example, "I am a robot" should give "I a" only.</p>
  
  <p>I thought I could use the shift command to through the arguments along with while and if statements, but I am unsure of how to convey a division by 2 with a remainder of 1 in the square brackets in the if statement ([])</p>
  
  <pre><code>#!/bin/sh
  X=$1
  shift
  while [ $# -gt 0 ]; do
    if [ "HELP HERE" ]; then
       X=$1
       echo $X
    fi
    shift
   done
  echo $X
  </code></pre>