#!/bin/bash

filename="$1"

function execute_on_file_change() {
    pandoc -o `basename $filename .md`.pdf $filename
}

function loop() {
    prev=
    while true; do
        current=`stat -f %m "$filename"`
        if [ "$current" != "$prev" ]; then
            execute_on_file_change "$filename"
            printf "\nDone"
        fi
        sleep 0.1s
        prev=$current
    done
}

loop