Category: Linux

Link: Using a Raspberry Pi as an AirPlay Receiver

The Raspberry Pi is a versatile little computer that provides the perfect sandbox to start creating some fun and interesting projects. One popular project is as an AirPlay receiver, allowing us to stream audio from an iOS device or computer using iTunes to our Raspberry Pi that’s connected to a set of speakers.

In this tutorial, I’ll show you how to set up a Raspberry Pi to be used as an AirPlay receiver so you can stream audio from any iOS device, iTunes or compatible AirPlay software such as AirFoil.

Full article here:
Using a Raspberry Pi as an AirPlay Receiver (mac tuts+)

Link: arkOS: Building the anti-cloud (on a Raspberry Pi)

arkOS is an open source project designed to let its users take control of their personal data and make running a home server as easy as using a PC

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arkOS is not a solution to the surveillance state, but it does offer an alternative to those who would rather exercise some measure of control over their data and, at the very least, not lock away their information in online services where its retrieval and use is at the whim of a corporation, not the user.

Full article here:
arkOS: Building the anti-cloud (on a Raspberry Pi) (TechWorld)
Related article:
arkOS aims to let anyone host their own cloud with a $35 Raspberry Pi (Liliputing)

Link: Basic Linux Shell Scripting Language : A Simple BASH Script to Test Your Internet Connectivity

Most of the users all over the world make use of Google’s Index Page to check whether their Internet connection is working or not.  Many times it is required to check periodically whether the server you are running is connected to internet or not. It is very cumbersome to open the web page every time you wish to check the connection. As an alternative, it definitely makes sense to run some scripts in the background periodically scheduling them using cron.

The bash script that can be used for this purpose is given below:

Full areticle here:
Basic Linux Shell Scripting Language : A Simple BASH Script to Test Your Internet Connectivity (Your Own Linux..!)
More interesting Linux tutorials and articles at this site

Link: VNC and SSH on Raspberry Pi Without Display

Here is a small walk through of how to install SSH and VNC on Raspberry Pi…

What is SSH? I really did not know the abbreviation until I googled it. It stands for “Secure Shell”. To be brief, with SSH connection between RPI and another computer, you can access the terminal prompt of RPI from the other computer (say your PC). Thus you will be able to execute commands remotely for the RPi from your PC without the need for a keyboard and mouse.

What is VNC? Virtual Network Computer. It is just like team viewer or any other remote desktop stuff, with which you can see your RPi’s desktop on your PCs screen, enabling GUI based access of RPI.

Assuming that you have an SSH enabled RPI, the tutorial follows.

Full article here:
VNC and SSH on Raspberry Pi Without Display (rajvigneshtn.weebly.com)
Related article:
VNC, SSH and HDMI: Three Options for Viewing Your Raspberry Pi (MakeUseOf)

Link: End the Tyranny of hosts files!

When developing websites and web applications, you will often have a local environment set up for testing in your browser. But what if you want to test it on another machine or device on your local network?

Chances are, the hostname of your computer won’t work as a valid virtual host on a mobile device (and some computers). Additionally, you might have multiple projects on the go that all need unique virtual host names to operate properly.

This problem used to be solved by the “hosts” file (in /etc/hosts on Linux/Mac and C:\Windows\System32\Drivers\Etc\hosts on Windows), but there’s a better way! You can use IP reflection services or wildcard DNS records to let you use nearly any virtual host name you want.

Full article here:
End the Tyranny of hosts files! (whateverthing.com)

Link: Unix: When pipes get names

Unix pipes are wonderful because they keep you from having to write intermediate command output to disk (relatively slow) and you don’t need to clean up temporary files afterwards. Once you get the knack, you can string commands together and get a lot of work done with a single line of commands. But there are two types of pipes that you can use when working on a Unix system – regular, unnamed or anonymous pipes and named pipes. These two types of pipes share some advantages, but are used and implemented very differently.

Full article here:
Unix: When pipes get names (ITworld)

Link: How to access ssh terminal in web browser on Linux

Running “everything” in a web browser used to be a bold statement. However, due to the increasingly powerful HTML5/JavaScript stack, a web browser has now become a dominant application delivery platform. Even the Linux kernel sandboxed in a web browser no longer sounds so crazy these days.

In this tutorial, I describe how to access an SSH terminal in a web browser on Linux. Web-based SSH is useful when the firewall you are behind is so restrictive that only HTTP(s) traffic can get through.

Full article here:
How to access ssh terminal in web browser on Linux (Xmodulo)

Link: Raspberry Pi: the Perfect Home Server

Ever since the announcement of the Raspberry Pi, sites all across the Internet have offered lots of interesting and challenging uses for this exciting device. Although all of those ideas are great, the most obvious and perhaps least glamorous use for the Raspberry Pi (RPi) is creating your perfect home server.

If you’ve got several different computers in need of a consistent and automated backup strategy, the RPi can do that. If you have music and video you’d like to be able to access from almost any screen in the house, the RPi can make that happen too. Maybe you have a printer or two you’d like to share with everyone easily? The Raspberry Pi can fill all those needs with a minimal investment in hardware and time.

Full article here:
Raspberry Pi: the Perfect Home Server (Linux Journal)

Link: MythWeb ssh tunnel howto [for MythTV users]

I am going to briefly describe how to connect to mythweb that is behind a firewall in a router. I will assume you have mythweb running. If you need help with that please see the mythweb documentation: http://www.mythtv.org/docs/ I will also assume that you know how to forward ports on your router. …..

Full article here:
MythWeb ssh tunnel howto (MythTV wiki)

Link: Check and Repair Your Filesystem With fsck [Linux/OS X]

No matter how well you take care of your computer, sometimes, it will just crash and you often have to pull off the plug to restart the computer. When such crashes happen, there is a chance that your filesystem will get corrupted or damage. It is advisable to do a filesystem check regularly to make sure that it is running properly and free of error.

In Linux (and Mac), there is this powerful command “fsck” that you can use to check and repair your filesystem. “Fsck” stands for “File System Consistency checK”.

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An important thing to note is that fsck cannot be used on a mounted partition. If you do so, there is a high chance that it will damage the filesystem.

(emphasis added)

Full article here:
Check and Repair Your Filesystem With fsck [Linux] (Make Tech Easier)

One thing the article doesn’t mention is that you can avoid the problem of not being able to use fsck on a mounted partition by causing the system to reboot and then immediately run fsck. To do that, issue this command from the command prompt:

shutdown -rF now

The “-r” option means “Reboot after shutdown”, and the “-F” option means “Force fsck on reboot.” The two options can be combined into “-rF” as shown above. Unfortunately, that only works in Linux, not OS X, but if you’re already booted into OS X you can use Disk Utility to check your filesystem, and then you don’t even need to reboot.