retry a function

retry-function.sh

#! /bin/sh

MAX_RETRIES=3

function sayHelloTo() {
  echo "Hello $1!"
  if [ -z "$2" ]; then local retry=0; else local retry=$2; fi

  # Make something and test
  if [ -d "/tmp/" ]
  then
    # Ok it works!
  elif [ $retry -lt $MAX_RETRIES ]
  then
    # Else retry
    echo "ERROR. Retry $retry/$MAX_RETRIES..."
    sayHelloTo "$1" "$retry"
  else
    # Too many retries
    echo "ERROR. Too many retries..."
  fi
}

sayHelloTo "Crazy"