Author: Admin

Link: Car Mp3-Player with the Raspberry PI

Everyone likes the Raspberry PI because you can do so much interesting things with it really easy. I ever wanted a own Mp3-Player with a nice display for my car and i tought that the Raspberry would be a good solution to start with. So i bought a Raspberry PI and some other parts to start with my project. After a bit of soldering, getting into the GPIO stuff and wiring all the components together i got the first problems with my project. I overcame all issues and have Listed you a complete tutorial do make this player so if you want to copy it of make a better version of it 🙂 you wont have the same issues i had to build my geek device here.

Full article here:
Car Mp3-Player with the Raspberry PI (Sentcool`s Projects)

Link: Securing Your Asterisk VoIP Server with IPTables

Now that you have set up your personal Asterisk® server, it’s time to secure it. I can’t overstate the importance of this step. Without it, you could be leaving your server’s VoIP and SSH ports open for anyone on the Internet, which is a very bad idea and may cost you a lot of money.

Full article here:
Securing Your Asterisk VoIP Server with IPTables (Lin’s Tech Blog)

Link: Top 10 Things to Connect to Your Raspberry Pi

During my time with the Pi I’ve experimented with various devices and sensors. Here is my Top 10 list of devices to connect to the Raspberry Pi. In most cases they are very cheap and easy to interface and are great building blocks for more complicated future projects. I’ve included links to more detailed posts where I can and many of these include example Python scripts to help you get going.

From robot cars to security systems there are plenty of ways of combining these mini-projects into some amazing creations! If you need to buy a present for a Pi owner then these are good starting point.

Full article here:
Top 10 Things to Connect to Your Raspberry Pi (Raspberry Pi Spy)

Link: Understanding the Linux df And du Commands

Although it is possible to get information about disk usage from within the various Linux desktops, those who are comfortable with the command line can get much greater detail using the df and du commands. With these two commands, not only can you discover details about the free space on the mounted file systems, but you can also see the amount of space used by individual directories.

Full article here:
Understanding the Linux df And du Commands (Make Tech Easier)

If you tried upgrading XBMC under OS X, run a MythTV backend, and get the error “No PVR Client has been started yet”, see this thread

This thread contains information on the buggy XBMC version 12.3 for OS X, and a couple of suggestions for reverting back to XBMC 12.2, which will fix the problem for now.  This issue does NOT appear to be present in Linux versions of XBMC 12.3.

Link: 30 Linux TOP Command Examples With Screenshots

The top command in Linux displays the running processes on the system. One of the most important tools for a system administrator. It is used extensively for monitoring the load on a server. In this article, we explore the top command in detail. The top command is an interactive command. Many commands are available when top is running. We will explore these commands as well.

Full article here:
Unbelievable ! 30 Linux TOP Command Examples With Screenshots (LinOxide)

Link: How to remote control Raspberry Pi

Once you have a fully working Raspberry Pi system, it may not be convenient for you to continue to access Raspberry Pi directly via a keyboard and HDMI/TV cable connector dedicated to Raspberry Pi. Instead, you will want to remote control “headless” Raspberry Pi from another computer.

In this tutorial, I will show you how to remote control your Raspberry Pi in several different ways. Here I assume that you are running Raspbian on your Raspberry Pi. Also, note that you are not required to run desktop on Raspbian when trying any of the methods presented in this tutorial.

Actually that last quoted line does not appear to be quite correct — the first three methods shown don’t require a desktop, but the fourth involves using VNC, which pretty much assumes a desktop will be present. And if were were considering using VNC, we might also want to consider Nomachine NX, which can support multiple simultaneous sessions that each have a separate, independent desktop, and is also faster than VNC in some situations. Although, we’ve never tried installing it on a Raspberry Pi.

Also, some or all of these tips may be useful for controlling Linux remotely regardless of the actual hardware that is in use — in other words, these are by no means exclusive to the Raspberry Pi.

Full article here:
How to remote control Raspberry Pi (Xmodulo)

Link: Do More, Faster In The Linux Terminal With Midnight Commander

This is the program we always install first in any new Linux-based installation, and if for some reason we can’t install it, that system tends to get blown away and replaced by a different version of Linux (or whatever) almost immediately. Not being able to install Midnight Commander is kind of a deal-breaker around here.

File browsing in a Linux terminal is alright, but it could be so much better. Midnight Commander is the program you’re looking for –  it gives you a two-paned file browser that makes working in the terminal so much easier. And the best part? It’s simple to get and use.

Full article here:
Do More, Faster In The Linux Terminal With Midnight Commander (MakeUseOf)

We’ll just add that even some Mac OS X users are apparently lost without Midnight Commander, since an older article on installing it under OS X is still one of the most popular on this site, even though for day-to-day use, we would think that most OS X users would be happier with the more recent versions of XtraFinder, which now includes dual pane functionality (and it’s free!). As for Windows users, there is always the venerable Total Commander.

How to make FreePBX and other Asterisk-based systems send voicemails and notifications to two or more email addresses

FreePBX and Asterisk do not allow you to send voicemails and notifications to multiple email addresses. But, there is a way to do it. Here are the simple steps:

  1. From a Linux command prompt, open the file /etc/aliases in your favorite text editor. Add a line to the end of that file, using a descriptive name that should not duplicate any of the names already in this file, nor the username of any users on the system. The line should look like this (this is just an example, obviously):
    foo: user1@gmail.com,user2@gmail.com
    Where foo can be replaced with any alias name you like that does not duplicate an existing alias or username.  You can add as many email addresses as you need, but they should be separated only by commas, and NO spaces other than the one between the alias name and the first email address.
  2. From the Linux command prompt, run the command newaliases and make sure that no errors are reported (you should not see any output at all).
  3. If you are running raw Asterisk, then wherever you would normally use a single email address, you can now use the alias name @localhost, for example, foo@localhost.
  4. If you are using an old version of FreePBX then it may not allow you to use addresses ending in @localhost. In that case, from the Linux command prompt run the command hostname -f and then use the result of that in place of localhost in step 3.
  5. You can repeat these steps as needed to create additional aliases for different users on your system.  You might want to use meaningful alias names, for example mikevm to send Mike’s voicemails to multiple addresses.
  6. Don’t forget that if you are only sending voicemail notifications, and not the entire voicemail as an attachment, that many wireless companies have SMS gateway addresses that you can send an email to, that will convert the first 140 characters of the email to an SMS text message.  You can find a list of email address formats to use for this purpose in this article:  How To Send Email To Any Cell Phone (for Free)
  7. This technique is not limited to Asterisk and FreePBX; it should provide a solution for any software that can’t seem to deal with more than one email address at a time.