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Old 11-08-2012, 04:49 AM   #1
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faraz began at the beginning.
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Join Date: Oct 2012
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Talking Calibre Install/Update Script for OS X

Note: The script below is old and remains here for history's sake. You can find the latest version in the Related Tools section.


I got fairly annoyed with having to download calibre manually every time there was an update. Here's a bash script I wrote that handles updates for OS X.

You can run the script from the terminal with `bash` or change the file extension to `.command` and double click the file.

#! /bin/bash
# Install the latest version of calibre for OS X
# Replaces any existing version in /Applications or ~/Applications
# Copyright (C) 2012 Faraz Yashar
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of  MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along with
# this program.  If not, see <>.

# Note: `set -e` is not included in order to provide custom error failures for
# failed cURL requests; with `set -e`, cURL the script will exit if returns `1`
# with a failed download

# Utility functions

# Exit with an optional [error message] and [exit status]
error_exit() {
  echo "Calibre install error: ${1:-"Unknown Error"}
You can manually download and install calibre from" 1>&2; exit "${2:-1}"

# GET a <URL> and write the output to <output file>; throw an error if the request fails
  response_code=`curl --write-out %{http_code} --silent --output $2 $1`
  [ "$response_code" != "200" ] && error_exit "Failed HTTP request!
Server responded with a $response_code error when requesting \"$1\"
See $2 for the full output of the request"

# Main script

[ `uname` != 'Darwin' ] && error_exit "This installation script is incompatible with `uname` operating systems."

calibre_running=`pidof calibre`
if [ $calibre_running ]; then
  echo "Quitting calibre..."
  osascript -e "tell application \"calibre\" to quit" || error_exit "Calibre failed to quit!"

echo "Downloading the calibre release feed from $release_url..."
download_or_exit $release_url /tmp/calibre-feed

calibre_download_url=`cat /tmp/calibre-feed | grep -o "http://calibre-ebook\.googlecode\.com/files/calibre.*\.dmg"`
# Raise an error if no download URL is found
if [ -z $calibre_download_url ]; then
  page_title=`cat /tmp/calibre-feed | grep "<title>.*</title>" | sed s/'<\/*title>'//g`
  error_exit "No download URL found at $release_url. Instead found page: $page_title
See /tmp/calibre-feed for the full contents of $release_url."

echo "Downloading calibre image from $calibre_download_url..."
dmg=`basename $calibre_download_url` # The image filename (e.g. 'calibre-x.x.x.dmg')
download_or_exit $calibre_download_url /tmp/$dmg

mount_point="/Volumes/`basename $dmg .dmg`"
echo "Mounting /tmp/$dmg to $mount_point..."
hdiutil attach /tmp/$dmg
[ -e $mount_point/ ] || error_exit '"" could not be found in the downloaded .dmg'

backup_dir="/tmp/calibre-`date +%s`.app.bak"

if [ -e local_calibre ]; then
  echo "Moving current calibre installation in ~/Applications to $backup_dir..."
  mv local_calibre backup_dir
elif [ -e /Applications/ ]; then
  echo "Moving current calibre installation in /Applications to $backup_dir..."
  mv /Applications/ backup_dir

cp -R $mount_point/ /Applications/
hdiutil detach `hdiutil info | grep $mount_point | grep -o "/dev/disk\d*s\d*"`

echo "Done! Launching calibre!"
osascript -e "tell application \"calibre\" to activate" || error_exit "Calibre failed to open!"

Last edited by faraz; 06-26-2013 at 03:57 PM. Reason: Update
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