The beginnings of a script to keep firefox-nightly up to date using cron. (Maybe not necessary if firefox nightly does that itself)

firefox-nightly.bash

#!/usr/bin/env bash
# Unofficial bash strict mode http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -euo pipefail
IFS=$'\n\t'


url="https://download.mozilla.org/?product=firefox-nightly-latest-ssl&os=linux64&lang=en-US"
dir=~/programs/firefox/nightly
version=`curl -s "${url}" | sed -E 's/.*firefox-(.*)\.linux.*/\1/g'`
versionDir="${dir}/${version}"

mkdir -p ${dir}
cd "${dir}"

if [[ -e "${versionDir}" ]] ; then
    echo "Version ${version} exists already @ ${versionDir}"
else


    echo "Getting firefox-nightly ${version} into ${dir}"
    wget --quiet -O - "${url}" | cat | tar xjvf -
    mv firefox ${version}
fi

if ! ps faux | grep -v grep | grep "${dir}/current" ; then
    if [[ -e "current" ]] ; then
        rm current
    fi
    echo "updating current to ${version}"
    ln -s ${version} current
else
    echo "firefox nightly is running. won't upgrade yet..."
fi