#!/bin/bash

if [[ ! -t 0 ]] ; then

  # Input from pipe or file (not terminal)
  export searchfor="$(cat)"

else
  # Input from terminal (args)

  export searchfor="$1"
  export searchin=.

  if [[ -z $2 ]] ; then
    export searchin=.
  else
    echo "Searching in $2"
    export searchin="$2"
  fi
fi

if [[ -z $searchfor ]] ; then
  echo 'Nothing to search for'
  exit 1
fi

find $searchin -iname "*$searchfor*"