# Switch example by mindsport
# Contact: mind@infract.net
#
# $0 = program name: ./switch.sh
# $1 = first switch after ./switch.sh <switch1>
# $2 = second switch after ./switch.sh <switch1> <switch2>
# etc..

if [ -z $1 ]; then # Nothing was put after ./switch.sh
  echo "Usage: $0 <-switch>"
  echo
  echo "Switches:"
  echo " -a <prints a>"
  echo " -b <prints b>"
  exit # ends script at this point
fi

if [ $1 = "-a" ]; then
  echo "You picked switch -a"
  # You can also add 'exit' here to finish the script without going on..
fi

if [ $1 = "-b" ]; then
  echo "You picked switch -b"
  # also you can add 'exit' here to finish the script
fi

# This is an example of a second switch like ./switch -a -b

if [ -z $2 ]; then # nothing was entered for switch2 so we ..
  exit # exit....
  else
  if [ $2 = "-a" ]; then
    echo "You picked switch -a"
    # Could finish the script with 'exit'
  fi
  if [ $2 = "-b" ]; then
    echo "You picked switch -b"
    # Also could finish with 'exit'
  fi
fi