#!/bin/sh

if [[ -n $1 ]]; then
	echo "File contains $(pdfinfo $1 | awk '/^Pages:/ {print $2}') pages"
else
	total=0
	count=0
	for file in *.pdf; do
		count_file=$(pdfinfo $file | awk '/^Pages:/ {print $2}')
		echo "$count_file pages in $file"
		total=$(($total + count_file))
        count=$((count + 1))
	done

	echo "
-> Total page count: $total
-> Total files: $count
-> Median: $(($total / $count))
"
fi