#!/bin/bash -e

# Name    : count-extdir
# Summary : Count number of files with specific extension in a given directory
# Author  : George Rawlinson
# Depends : error

# check number of arguments - should be 2
if [ ! $# -eq 2 ]; then
    error "Expected 2 arguments: directory & extension"
    exit 1
fi

# check if directory exists
if [ ! -d "$1" ]; then
    error "Directory does not exist"
    exit 1
fi

# recursively find EXT in DIR
find "$1" -type f -iname "*.$2" -printf '\n'| wc -l
# find flags
# type -f - limit to files
# iname   - case insensitive
# printf  - print new line after each result
# |       - pipe results to next command
# wc -l   - count number of new lines
# Source : http://unix.stackexchange.com/questions/146760/count-files-in-a-directory-by-extension


exit 0