Check If File Is Empty OR Not by Bash Script

	#!/bin/bash
	_file="$1"
	[ $# -eq 0 ] && { echo "Usage: $0 filename"; exit 1; }
	[ ! -f "$_file" ] && { echo "Error: $0 file not found."; exit 2; }
	if [ -s "$_file" ]
	then
	echo "$_file has some data."
	# do something as file has data
	else
	echo "$_file is empty."
	# do something as file is empty
	fi

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