Question

I’m trying to write a shell script for Mac OSX Mountain Lion (10.8.2). However, no matter what I try, I can’t get the switch statement to work. He is a very simplified version of the script:

#!/bin/bash

while getopts "ei" opt; do
  case $opt in
    e)
      echo "Got option e"
      ;;
    i)
      echo "Got option i"
      ;;
    \?)
      echo "Invalid option: -$opt"
      ;;
  esac
done

No matter what I try, I don’t get any output. Any ideas? I’ve done scripts like this in the past.

Answer 1

You might be passing the options incorrectly don’t forget the -

script.sh -e

Note you should also exit after an invalid option:

\?)
  echo "Invalid option: -$opt"
  exit 1
  ;;