gistfile1.txt

#!/bin/bash

# Add the following commands to your setup commands to update firefox
# git clone https://gist.github.com/9525133.git update_firefox
# bash ./update_firefox/update_firefox 28
# firefox --version

set -e

pushd ~/ > /dev/null
rm -fr firefox

firefox_file=firefox-46.0.1.tar.bz2
cache_path=~/cache/$firefox_file

download_url=http://ftp.mozilla.org/pub/firefox/releases/46.0.1/linux-x86_64/en-US/firefox-46.0.1.tar.bz2

curl -I -f $download_url

if [ ! -f $cache_path ]; then
  wget $download_url -O $cache_path
fi

tar -jxf $cache_path
firefox --version

popd > /dev/null