Find Linux CPU Temperature

The easiest way to get a CPU temperature readout from Linux is by looking at an ACPI function called temperature:
[code]
cat /proc/acpi/thermal_zone/THRM/temperature
[/code]

You could also try sensors-detect and then sensors, but I had some trouble detecting the correct modules on 8 year old hardware.

 

uTrack Mobile Application

Trendy name aside, the uTrack mobile application is entirely responsible for my recent disappearance. Find out more about uTrack.

 

Dual-Boot a Sansa e260 with Sandisk OG and Rockbox

Hi, thanks for reading. I’m a friend of Ben’s and he’s letting me put down this post. I run a small electronic music blog at astropope.com. If you have seen the post about how to boost wordpress audio with Amazon S3, then you know we are the guinea pigs to test a new breed of online music blogging.

Pompous? Maybe. Fun? Yes. If you like music as much as we do, you probably want to be wearing it around your neck 24/7. In my case, you want it to listen to on your public transportation commute to work. Right? Or you’re having a hard time transporting 100+ gigs of music to your FreeBSD workstation. I know the feeling.

In this article, I am going to show how to set up your Sansa e260 as a “dual boot” with Sandisk’s original firmware and the Rockbox software.

I am not an expert on the technical differences between MSC or MTP, but in order to install the Rockbox software, you MUST have your Sansa in MSC mode. In Sansa’s original operating software, you will need to navigate to the “Settings” part of the wheel menu. Within there, you will find an option to switch between MCP and MTP. Many Google searches will give you quite intoxicating information of the minute details of both protocols.

The first thing it would be nice for you to do is update the firmware (since mine was refurbished, I had to update the firmware). Download the firmware updater and install it. I cannot always guarantee the accuracy of that link, but if it ever goes down, go to sandisk.com and look around.

Once you have updated what I called the “OG” Sansa software, you are ready to start installing Rockbox. You can begin by going to the install page and selecting the appropriate device.

At the time of this version, we are working with version 3.1 of Rockbox and SanDisk Sansa e200. I tried Option 1, the Automatic Install, but this did not work for me as it constantly claimed it could not detect my Sansa device, so I opted for the manual install.

Download the archive for the Rockbox installation and extract the contents to the root of your Sansa’s file system. For example, H:\.rockbox

Once that has been completed, you can access both the Rockbox software and Sandisk original firmware by installing sansapatcher.exe.

You should now have a pretty sweet “dual booting” mp3 player. Upon reboot, it will default to Rockbox, but you can get to the “OG” by pressing left on the main control.

You have any problems, please let us know!

http://www.sandisk.com

http://www.rockbox.org

 

Boost WordPress Audio w/ Amazon S3

The Simple Storage Service (S3) from Amazon is an easy way to serve information. Its high availability and low cost make it a no-brainer when it comes to hosting.

Recently, a friend moved his website (the Astropope) from my server to that of a hosting company (for which he presently works). Along with his account comes 3 GB of storage, except he currently uses about 5 GB. To help with the transition, we decided to move the majority of content over to S3.

In order to do this, we got an account, uploaded everything, made a DNS record, and then ever-so-slightly modified a WordPress plugin.

The steps we took are detailed for your convenience:

1. Sign up for an S3 account.

2. Download, install & configure the S3Fox plugin for Firefox.

3. Amazon uses a bucket as a means for organizing information. You may refer to a bucket as a unique, top-level directory. Many directories may exist within a bucket, but the most absolute of those contained within is a ‘bucket’. Create a bucket named s3.[yourdomain].com. In that bucket, make an audio directory. So now we have something along the lines of s3.[yourdomain].com/audio.

4. Using S3Fox, upload your mp3 files to the newly created audio directory within the bucket.

5. Right-click the audio directory and specify an ACL with read access for public requests. Note: Without specifying an ACL w/ public read access, it won’t work.

6. Within WordPress, install the Audio Player plugin.

7. Once installed, modify the plugin as such:

edit audio-player.php

Under // Options Default add:
add_option(‘s3_url’, ”, “Amazon S3 URL”, true);

Under // Global variables change $ap_audioURL to:
$ap_audioURL = get_settings(‘s3_url’) . get_option(“audio_player_web_path”);

Under // Update plugin options add:
update_option(‘s3_url’, $_POST['s3_url']);

edit options-panel.php

[code]
<tr>
<th width="33%" valign="top"><label for="ap_audiowebpath">Audio files directory:</label></th>
<td>
<input type="text" id="ap_audiowebpath" name="ap_audiowebpath" size="40" value="<?php echo( get_option("audio_player_web_path") ); ?>" /><br />
Recommended: <code>/audio</code>
</td>
</tr>
<!-- snipit starts here -->
<tr>
<th width="33%" valign="top"><label for="s3_url">Amazon S3 URL:</label></th>
<td>
<input type="text" id="s3_url" name="s3_url" size="40" value="<?php echo( get_option("s3_url") ); ?>" /><br />
<?php $string = get_option("siteurl");
$url2 = substr($string, 7);
echo "(e.g. http://s3." . $url2 . ")"; ?>
</td>
</tr>
<!-- snipit ends here -->
[/code]

Alternately, you can upload/replace with these pre-modified files:
wp-content/plugins/audio-player.php
wp-content/plugins/audio-player/options-panel.php
(be sure to rename from .ph_ to .php)

Login to WordPress, then go to Settings -> Audio player and add http://s3.[yourdomain].com to the new field below the audio files directory.

8. Add a cname (alias) at your domain registrar:
S3 -> bucketname.s3.amazonaws.com
(e.g. s3.[yourdomain].com.s3.amazonaws.com)
where S3 points to bucketname.s3.amazonaws.com. (TTL of 1 hr is acceptable.)

9. Post a song according to the directions for the plugin.

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

Did it work for you? Did you run into any trouble? (I’d be happy to help you set this up if you’d like assistance.)

– Edit:  9.16.09 –

Version 2.0 beta 6 of the Audio Player plugin includes an option for a custom URL.  When upgrading to this most recent version, there is no need to modify any source code.  Nice!

Also, the most recent version of the WordPress S3 plugin version .4 adds a setting for virtual hosting:

Make sure you check the ‘Bucket is setup for virutal hosting’ box.  If you see DNS warnings at the top of the plugin screen, refresh the page and it should go away (if you had this setup previously).

 

Setup Openfire Chat Server and Configure Asterisk-IM Plugin

In this session, I will show you how to setup the Openfire real-time collaboration server from Ignite Realtime. This free, open source application is a great way for organizations to leverage chat capabilities.

Also, we’re going to configure the Asterisk-IM plugin to interface with our Asterisk PBX. This plugin can be configured to display Caller ID information, and view the phone status of other users.

We’ll be using Spark as the chat client, also from Ignite Realtime.

Installing Openfire on Fedora is simple:

[code]
rpm -ivh openfire-3-5-2-1.i386.rpm
[/code]

When the transaction has completed and Openfire has started, access http://hostname:9090 to finish the remaining portion of the setup process.

In this demo, I used a domain name for the system that would be considered inadequate in most cases. It is always best to use the FQDN (fully qualified domain name) of your system. Also, don’t forget to allow client traffic through your firewall (TCP 5222-5223), with each client as well. Did you run into configuration issues or problems? How did this install go for you?

 

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