Update install-reddit.sh

#!/bin/bash -e
# The contents of this file are subject to the Common Public Attribution
# License Version 1.0. (the "License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://code.reddit.com/LICENSE. The License is based on the Mozilla Public
# License Version 1.1, but Sections 14 and 15 have been added to cover use of
# software over a computer network and provide for limited attribution for the
# Original Developer. In addition, Exhibit A has been modified to be consistent
# with Exhibit B.
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
# the specific language governing rights and limitations under the License.
#
# The Original Code is reddit.
#
# The Original Developer is the Initial Developer.  The Initial Developer of
# the Original Code is reddit Inc.
#
# All portions of the code written by reddit are Copyright (c) 2006-2013 reddit
# Inc. All Rights Reserved.
###############################################################################

###############################################################################
# The reddit installer
# --------------------
# This script installs a reddit stack suitable for development. DO NOT run
# this on a system that you use for other purposes as it may accidentally
# an important file.
#
# You can run this script as is, in which case a user "reddit" will be created
# and the code will be placed in its home directory. The various reddit-code
# components of the stack will run as this user.
#
# To change aspects of the install, modify the variables in the "Configuration"
# section below.
###############################################################################
set -e

###############################################################################
# Configuration
###############################################################################

# which user should run the reddit code
REDDIT_USER=reddit

# the group to run reddit code as
REDDIT_GROUP=nogroup

# the root directory in which to install the reddit code
REDDIT_HOME=/home/$REDDIT_USER

# which user should own the installed reddit files
# NOTE: if you change this option, you should move the mako template
# cache directory by changing the "cache_dir" option in the [app:main]
# section of the update files as $REDDIT_HOME will most likely
# not be writable by the reddit user.
REDDIT_OWNER=reddit

# the domain that you will connect to your reddit install with.
# MUST contain a . in it somewhere as browsers won't do cookies for dotless
# domains. an IP address will suffice if nothing else is available.
REDDIT_DOMAIN=${REDDIT_DOMAIN:-reddit.local}

###############################################################################
# Sanity Checks
###############################################################################
if [[ $EUID -ne 0 ]]; then
    echo "ERROR: Must be run with root privileges."
    exit 1
fi

# seriously! these checks aren't here for no reason. the packages from the
# reddit ppa aren't built for anything but precise (12.04) right now, so
# if you try and use this install script on another release you're gonna
# have a bad time.
source /etc/lsb-release
if [ "$DISTRIB_ID" != "Ubuntu" -o "$DISTRIB_RELEASE" != "12.04" ]; then
    echo "ERROR: Only Ubuntu 12.04 is supported."
    exit 1
fi

###############################################################################
# Install prerequisites
###############################################################################
set -x

# create the user if non-existent
if ! id $REDDIT_USER &> /dev/null; then
    adduser --system $REDDIT_USER
fi

# aptitude configuration
APTITUDE_OPTIONS="-y" # limit bandwidth: -o Acquire::http::Dl-Limit=100"
export DEBIAN_FRONTEND=noninteractive

# run an aptitude update to make sure python-software-properties
# dependencies are found
apt-get update

# add the reddit ppa for some custom packages
apt-get install $APTITUDE_OPTIONS python-software-prop