#!/usr/bin/env bash

LIMIT=30
DIR="$1"

if [ -z "${DIR}" ]
then
	echo "The directory value cannot be empty"
	exit 1
fi

NO="0"
NUMBER=$(find ${DIR} -maxdepth 1 -type f |wc -l)

echo "The number of files in the directry: ${NUMBER}"
if [[ $NUMBER -gt $LIMIT ]]  #if number greater than limit
then
	del=$(($NUMBER-$LIMIT))
	if [ "$del" -lt "$NO" ]
	then
		del=$(($del*-1))
	fi

	echo $del

	FILES=$(find ${DIR} -maxdepth 1 -type f -printf "%T@ %f\n" | sort | cut -d' ' -f2 | tail -n "$del")

	echo "${FILES}"
fi