A year ago I received an OLPC XO (the “$100 laptop”) through their Give One Get One program. I played with it for a few days and found it essentially useless due to unstable and slow software (and lack of WPA support), so it quickly began gathering dust on a shelf (it has since improved).
Last week I was thinking about how cool it would be if Amazon’s Kindle supported O’Reilly’s Safari Books Online service, and I decided to dust off the XO to see if it could be used as an ebook reader for Safari Books. With a little help, it can.
In ebook mode you can scroll in all four directions, page up/down, and jump to the top or bottom of a page, but you cannot click the next/previous buttons within Safari Books. However, GreaseMonkey and a simple userscript can solve that.
The first step is to install the Firefox “Activity”, or a version of Linux that runs a stock Firefox. Then install GreaseMonkey. Finally, install this userscript:
This simple userscript intercepts page up and page down (the “O” and “X” game pad) buttons and maps them to “previous” and “next” actions in Safari Books, allowing you to easily switch pages in ebook mode.
Most Mac OS X power users know about the [“open”](http://tuvix.apple.com/documentation/Darwin/Reference/ManPages/man1/open.1.html) command line tool which opens the files specified as arguments in their default (or a specified) OS X application. Additionally, many OS X text editors, such as TextMate (“mate”) and SubEthaEdit (“see”), come with command line tools which can be used to open files.
These are great when working locally, but obviously do no work remotely. Often when working on remote servers you end up using command line editors which you may not be as familiar with.
The [ropen](http://github.com/tlrobinson/ropen) tool solves this problem using two simple shell scripts, which make use of MacFuse’s sshfs. You run the “ropen” program on your remote machine(s) when you want to open a remote file locally (this is equivalent to the OS X “open” command). The “ropend” daemon runs on your local OS X machine waiting for open requests, and the “ropen.php” PHP script proxies requests from ropen to ropend.
How it works
1. When ropen is executed it makes an HTTP request to ropen.php with the paths to be opened and application to open them with, if any, as well as the SSH user, host, and port of the remote machine.
2. ropen.php stores this open request in a queue that is tied to ROPEN_SECRET via PHP’s sessions.
3. ropend polls ropen.php every 1 second waiting for open requests. When it receives one it mounts the remote filesystem using sshfs (if it’s not already mounted) and opens the files or directories specified.
See more information about ropen on the [ropen project page](http://github.com/tlrobinson/ropen).