Command line options in bash

gistfile1.sh

#!/bin/bash

if [ "$1" == "-t" ] ; then
  test_mode='true'
else
  if [ "$1" == "" ] ; then
    test_mode='false'
  else
    echo "Unrecognized option \"$1\""
    echo "Usage: asdf.sh [-t]"
    exit 1
  fi
fi

echo $test_mode

hh